Oct 18, 2022 By admin WS&C – 1st Year Load QuizSave Quiz Welcome to CBT Exam Preparation Try to repeatedly answer the questions till you get the CORRECT answers LET'S CONTINUE 1. What are the two classifications of system of units? British and Metric Gravitational and non-gravitationaL Fundamental and derived Metric and International 2. What are fundamental units? Length, Mass, Volume Length, Mass, Time Length, Mass, Area Length, Pressure, Volume 3. What denotes letter M in MKS system? Mile Meter Millimeter Micron 4. How many millimetres are there in 1 inch? 2.54 mm 25.4 mm 24.5 mm 2.45 mm 5. What is the LCM of 12, 18, 6, 36? 12 18 36 42 6. What is the HCF of 18, 42, 24? 2 6 18 24 7. What is the product of 0.003 x 0.5? 0.00015 0.0015 0.015 0.15 8. What is the length of each part is a copper wire of 225 metre long is cut into 900 equal parts? | 0.23 metre 0.25 metre 0.28 metre : 0.29 metre 9. What is the square root of 529? 13 23 33 43 10. What is the square root of 0.017? 0.001 0.13 0.00001 0.000001 11. What is the definition of ratio? Relation of two quantities of the same kind Relation of two quantities of the different kinD Equality between two ratios Inequality between two ratios 12. What is the ratio of 4 kg to 800 grams? 5 : 1 4 : 8 8 : 4 2 : 4 13. What percentage of 80 is 20? 0.8 0.4 0.25 0.2 14. How much is 8% of 40 kg? 2.2 kg 3.2 kg 4.2 kg 5.2 kg 15. Convert 0.456 decimal fraction into percentage? : 45.6% 0.0456 0.456% 0.0456% 16. What is the x value for x2 + 62 = 102? 4 6 8 10 17. What is the square root of decimal number 550.37? 21.26 22.26 22.46 23.46 18. What is the value of Ö8 + Ö18 - 2Ö2? 2.24 3.24 4.24 5.24 19. What is the side AB if AC = 10 cm and BC = 6 cm? 8 cm 6 cm 5 cm 4 cm 20. What is the side AB, if BC = 15 cm and AC = 9 cm? 4 cm 8 cm 10 cm 12 cm 21. What is the length L2, if total length (L) is 2.75 metre and L1 : L2 = 2 : 3? 1.1 metre 1.25 metre 1.65 metre 1.75 metre 22. How many days a mechanic takes to assemble 64 machines if he assembles 8 machines in 3 days? 20 days 22 days 24 days 26 days 23. What will be the rpm of smaller gear if a 180 mm dia meshes with 60 mm dia gear and the bigger gear makes 60 rpm? 120 rpm 140 rpm 160 rpm 180 rpm 24. What is the percentage of copper if the casting weight of copper 42.3 kg and tin weight 2.7 kg? Cu 92% Cu 94% Cu 96% Cu 98% 25. A motor cycle tyre is sold for Rs 300/- what is the purchase price if 25% profit is added to it Rs 200 Rs 220 Rs 240 Rs 260 26. What is the decimal fraction of conversion of 18.5%? 0.185 0.175 0.165 0.195 27. Which one is non-metal? Mercury Graphite Brass Iron 28. Which metal contains iron as a major content? Brass metal Bronze metal Zinc Ferrous metaL 29. What is the name of the metal which do not contain iron? Ferrous metals Non-ferrous metals Insulating metals Non-Insulating metals 30. Which one of the following properties is the mechanical properties of metal? Fusibility Ductility Corrosion Structure 31. Which is brittle metal? Cast iron Steel Mild steel Alloy steel 32. Which mechanical property of a metal offers resistance to elastic deformation in a cutting tool? Ductility Malleability Hardness Toughness 33. Which property of material enables to formation of permanent deformation without fracture? Elasticity Plasticity Ductility Brittleness 34. Which property of metal has its power of returning to its original shape after the applied force is released? Malleability Tenacity Elasticity Plasticity 35. Which property of a metal possessed by it melts when heat is applied? Conductivity Malleability Fusibility Tenacity 36. Which alloy used in electric lamp as filament? Cobalt Vanadium Tungsten Silicon 37. What metals contained in brass alloy? Copper and aluminium Copper and lead Copper and zinc : Copper and tin 38. Which cast iron cannot be welded? Grey cast iron White cast iron Malleable cast iron Nodular cast iron 39. Which metal cannot be forged? Alloy steel Mild steel Steel Cast iron 40. Which metal is widely used for making casting of machinery parts? Grey cast iron White cast iron Malleable cast iron Wrought iron 41. Which furnace is used to get pig iron from iron ore? Mild steel - Rever battery Electric furnace Blast furnace Cupola 42. What is the name of furnace to obtained cast iron? Cupola Mild steel - Blast furnace Steel - Rever battery Alloy metal - Electric furnace 43. What is the other name of low carbon steel? Low alloy steel High alloy steel High speed steel Mild steeL 44. What is the carbon percentage in medium carbon steel? 0.05% to 0.15% 0.15% to 0.25% 0.25% to 0.5% 0.5% to 1.5% 45. What is the carbon percentage in low carbon steel? 0.02% to 0.03% 0.15% to 0.25% 0.25% to 0.50% 0.50% to 1.50% 46. What is the carbon percentage in high carbon steel? 0.02% to 0.03% 0.15% to 0.25% 0.25% to 0.50% 0.50% to 1.50% 47. What is the ore of aluminium? Hematite Mallatite Bauxite Lemonite 48. Which property of a metal enables it by which it can be drawn out into wires under tension without rupture? Ductility Malleability Hardness Brittleness 49. Which among the following is an insulator? Copper Aluminium Silver Mica 50. Which rubber is used as insulator for power cables and control wires? Butyl Hypalone Silicon Nitrite butadiene 51. Which alloy steel is used to make permanent magnets? Silicon steel Manganese steeL Vanadium steeL Cobalt steeL 52. Which insulator is used in over head lines? Mica Rubber P.V.C Porcelain 53. Which insulating material is used for making switches? Porcelain PVC Bakelite Ebonite 54. What is the name of the property of an insulation that should brake down or puncture on application of high voltage? Di-electric strength Specific resistance Mechanical strenth Non absorption 55. Which alloy steel is using for making precious instrument? Silicon steel Manganese steel Invar steel Vanadium 56. Which steel is used for making files and cold chisel? Low carbon steel Midium carbon steel High carbon steel Stainless steel 57. What is termed as the quantity of matter contained in a body? Density Volume Mass Specific gravity 58. What is the force with which a body is attracted by the earth towards its centre? Mass Weight Volume Density 59. What is called mass per unit volume of a substances? Mass Weight Density Volume 60. What is called the ratio between the density of a substances density of water at 4°C? Density Specific gravity Mass Weight 61. What is the density of aluminium? 2.7 g/cm3 3.7 g/cm3 4.7 g/cm3 5.7 g/cm3 62. Wha is the mass if the density of a body is 7.6 g/cm3 and its volume is 25 cm3? 190 grams 200 grams 210 grams 220 grams 63. What is the specific gravity of the solid, if density of the solid is 19.5 g/cm3? 18.0 18.5 19.0 19.5 64. What is the density (r) in g/cm3 of an iron cube, if it weighs (W) 4.8 kg and volume (V) is 640 cm3? 6.6 g/cm3 6.9 g/cm3 7.2 g/cm3 7.5 g/cm3 65. What is the volume (V) of mercury in cm3, if mass (m) of mercury is 1 kg and density (r) is 13.6 g/cm3? 73.53 cm3 73.43 cm3 73.33 cm3 73.23 cm3 66. What is the mass in gram, if a force of 15 dyres acting on a mass m producing an acceleration of 2.5 cm/sec2? 9 grams 8grams 7 grams 6 grams 67. What is the specific gravity of the metal, if the piece of metal weighs 150 grams in air and 125 grams in water? 6 10 15 25 68. What is the volume of mercury in cm3, if the mass (m) of mercury is 136 grams (g) and density (r) of mercury is 13.6 g/cm3? 136 cm3 13.6 cm3 10.6 cm3 10.0 cm3 69. What is the block weighs (W) in kg, if volume (V) is 320 cm3 and density 8.9 g/cm3? 2.948 kg 2.848 kg 2.648 kg 2.448 kg 70. What is the specific gravity of the metal, if the weighs 6.5 kgf in air and 3.5 kgf in water? 6.166 3.166 2.166 1.166 71. What is the weight force of a car has a mass of 800 kg?(Take g = 9.81m/sec) 7848 Newton 7748 Newton 7847 Newton 7487 Newton 72. What is the formula for speed? Distance covered/Time Change in velocity/Time Distance in definite direction /Time Change in momentum/Time 73. What is the unit of speed? Metre/second Metre/second2 Metre/minute Metre/hour 74. What is the formula for velocity? Distance covered/Time Displacement/Time Change in velocity/Time Change of momentum/Time 75. What is the unit for velocity? Metre/second Metre/second2 Metre/minute Metre/hour 76. What is called if a body posses only magnitude or size alone? Speed Velocity Vector quantity Scalar quantity 77. What is called if a body posses both magnitude and direction of velocity? Speed Velocity Vector quantity Scalar quantity 78. What is the rate of change of displacement of a body? Body at rest Body at motion Speed Velocity 79. What is velocity of a body travels a distance of 168 metres in a line in 21 seconds? 6 m/sec 8 m/sec 10 m/sec 12 m/sec 80. What is the speed of a train of 80 metre long train passes a railway station platform of 120 metres length in 20 seconds? 30 km/hour 32 km/hour 34 km/hour 36 km/hour 81. What is the unit of acceleration of an object? Metre/second Metre/second2 Metre/minutes Metre/minutes2 82. What is the acceleration of a car if the speed of the car has increased from 25 km per hour to 40 km per hour in one minute? 0.059 m/sec2 0.59 m/sec2 0.069 m/sec2 0.69 m/sec2 83. What is the retardation of a car moving with a velocity of 50 km/hr is brought to rest in 45 seconds? 0.40 m/sec2 0.30 m/sec2 0.20 m/sec2 0.10 m/sec2 84. What is the acceleration of an aeroplane taking off from landing field has to run 700 metres if it leaves the ground in 10 seconds from the start? 8 metre/sec2 10 metre/sec2 12 metre/sec2 14 metre/sec2 85. : What maximum height a stone will reach if it is thrown upwords with a velocity of 20m/sec?(g = 10m/sec2 10m 20m 30m 40m 86. What is the work done in unit time? Energy Power Force Acceleration 87. What is the capacity of a body to do work is called? Energy Power Acceleration Force 88. What is the ratio of power output to power input? Work Energy Efficiency Acceleration 89. What is called if a force of 1Newton acts on a body and moves it through a distance of 1 metre? 1 Joule 10 Joules 1 dyne 10 dynes 90. How many ergs for 1 Joule? 103 ergs 105 ergs 107 ergs 109 ergs 91. How many newtons for 1 kilogram? 981 Newtons 98.1 Newtons 9.81 Newtons 0.981 Newtons 92. How many watts for 1 horse power in metric system? 725.5 watts 735.5 watts 745.5 watts 755.5 watts 93. How many watts for 1 horse power in British system? 726 watts 736 watts 746 watts 756 watts 94. What is the equivalent unit for 1horse power in metric system? 75 kg.m/sec 76 kg.m/sec 77 kg.m/sec 78 kg.m/sec 95. What is the formula for potential energy? mgh joule mgh2 joule 1/2 mgh joule 2/3 mgh joule 96. What is the formula for kinetic energy? 1/2 mv joule 1/2 mv2 joule 2/3 mv2 joule 2/3 mv joule 97. How much work done in one hour, if a pump can raise 100 liters of water through a height of 200 meters in one minutes? 12 x 104 kg meter 12 x 105 kg meter 12 x 106 kg meter 12 x 107 kg meter 98. What is the work done, if a force of 250 newtons acted upon a body and the body has been moved through a distance of 15 metres? 3720 Joules 3730 Joules 3740 Joules 3750 Joules 99. What is the potential energy, if a body of mass 250 kg is at a height of 30 metre? 72.57 KJ 73.57 KJ 74.57 KJ 75.57 KJ 100. What is the potential energy in a body of mass 10 kg kept on the top of a pole 20 metres height? 1942 Joules 1952 Joules 1962 Joules 1972 Joules 101. What is the work done in joules if a load of 15.5 kg is lifted through a height of 4.4 metres? 639 Joules 649 Joules 659 Joules 669 Joules 102. What is the kinetic energy of a bullet of mass 5gm travels with a speed of 500 m/sec? 620 Joules 625 Joules 630 Joules 635 Joules 103. Which refers the temperature? : It is a form of energy It tells the state of heat It tells specifie heat of substance : It is measured by calorie meter 104. What is the S.I unit of heaT? Calorie Joule Centigrade heat unit British thermal unit 105. Which instrument is used to measure heat? Calorie meter Thermometer Pyrometer Barometer 106. What is the quantity of heat required to raise the temperature of 1 gram of water through 1°C is called? Specific heat Colorie British thermal unit Centigrade heat unit 107. What is the value for specific heat of water? 4 3 2 1 108. Which type heat is the heat absorbed or given off by a substance without changing its physical state? Latent heat Sensible heat Specific heat Latent heat of steam 109. What is the boiling point of water in fahrenheit scale? 212°F 180°F 112°F 100°F 110. What is the freezing point of water in kelvin scale (K)? 373°K 313°K 303°K 273°K 111. Convert 45°C (Centigrade) into °F (Fahrenheit). 110°F 111°F 112°F 113°F 112. At what temperature will Fahrenheit and centigrade thermometers give the same reading? 38°C 39°C 40°C 41°C 113. Convert - 273°C (Centigrade) into kelvin scale? 0°K 1°K 2°K 3°K 114. What is the value in degree centigrade for 20°F? -6.37°C -6.47°C 6.57°C -6.67°C 115. What is the maximum temperature that can be measured by mercury thermometer? 400°C 300° 200°C 100°C 116. What is the name of temperature measuring instrument? Vapour pressure thermometer Bimetalic thermometer Radiation pyrometer Thermoelectric pyrometer 117. Which instrument is used to measure temperatures of red hot metals up to 3000°C? | Radiation pyrometer Thermoelectric pyrometer Bimetal thermometer Alcohol thermometer 118. Which type of heat transmission takes place through physical contact? Conduction Convection Radiation Reflection 119. Which kind of heat transmission takes places by up-ward flow? Conduction Convection Radiation Reflection 120. Which one is the radiation method of heat transmission? An iron rod is heated with one of its end and heat transmitted to other end Cold water goes to the bottom from top while on heating the wate On heating gases, heat transmitted to surroundings The heat from sun travels through the space 121. What is called if the length of the solid expands when heated? Linear expansion Superficial expansion Cubical expansion Area expansion 122. What is the change in length per unit original length per degree rise in temperature is called? Co-efficient of friction Co-efficient of linear expansion Co-efficient of superficial expansion Co-efficient of cubical expansion 123. What is the unit of co-efficient of linear expansion? Number /°C Number /°C Number /°C / mm length Number /°C / cm length 124. 125. What is term used for 2 x linear expansion? Co-efficient of friction Co-efficient of linear expansion Co-efficient of superficial expansion Co-efficient of cubical expansion 126. What is term called for 3 x linear expansion? Co-efficient of friction Co-efficient of linear expansion Co-efficient of superficial expansion Co-efficient of cubical expansion 127. 128. What is the co-efficient of linear expansion of a rod if it is found to be 100 m long at 20°C and 100.14 m long at 100°C? : 1.75 x 10-4 / °C 1.75 x 10-5 / °C 1.75 x 10-6 / °C 1.75 x 10-7 / °C 129. What is called for the amount of heat required to raise the temperature of unit mass of a substance through 1°C? Sensible heat Latent heat Specific heat Mixing of heat 130. How much quantity of heat is required?m = 120 litres t1 = 20°C t2 = 85°C S = 4.2 Q = _____ KJ 32750 KJ 32760 KJ 32770 KJ 32780 KJ 131. Calculate the amount of heat required to raise the temperature of 85.5 gm of sand from 20°C to 35°C specific heat of sand = 0.1 128.25 Joules 125.28 Joules 128.26 Joules 126.28 JouleS 132. What is the specific heat of the material if we require 510 calories to raise the temperature of 170 gm of material from 50°C to 80°C? 0.1 0.01 1.1 1.11 133. How much quantity of heat is required to raise the temperature of 300 grams of copper (sp.heat 0.092 cal/gram) from 25°C to 75°C in Kcal? 138 Kca 1.38 Kcal 207 Kcal 2.07 Kcal 134. How much heat is absorbed by a copper ingot weighing 400 Kg is heated from 40°C to 72°C for the purpose of forging? (sp.heat of copper is 0.09) 1521 Kcal 1251 Kca 1152 Kcal 1215 KcaL 135. What is called for the materials that restricts heat flow by radiation, conduction and convection? Conductors Insulators Ferrous Non-ferrous 136. Which one is heat insulator? Thermocole Copper Brass Aluminium 137. Which one has the highest thermal conductivity? Solid ice Melting icE Water Steam 138. : Which one of the following is not a property of heat insulating material? Low conductivitY Resistance to fire Less moisture absorption Ductility 139. Which insulating material is most widely used in refrigerators? Thermocole Polyurethane Glass wooL Cork sheeT 140. Which one is a poor heat insulator? Glass Cork Rubber : Saw dust 141. What is known for the temperature at which any solid melts into liquid? Boiling poinT Melting point Latent heat of fusion Latent heat of vaporisation 142. : What is the melting point of aluminium? 660°C 680°C 620°C 143. What is the boiling point of aluminium? 1897°C 2519°C 2469°C 660°C 144. What is the boiling point of water? 0°C 32°C 100°C 212°C 145. What is the melting point of mercury? 357°C 209°C -7.1°C -38.72°C 146. What is the boiling point of mercury? 357°C 280°C 759°C 767°C 147. What is the ratio of force (or) thrust per unit area? Work Power Pressure Energy 148. What is the equivalent pascal value for 1 bar? 105 pascal 107 pascal 103 pascal 109 pascal 149. What is the SI unit of pressure? Joule Pascal Bar Newton 150. : Which machine converts mechanical energy into electrical energy? Battery Generator Heater Iron box 151. Which is the unit of current? Ampere Volt Ohm Watt 152. Which is the unit of resistance? Ampere Volt Ohm Watt 153. What is the flow of electrons in any conductor? | Voltage Current Resistance Power 154. Which property of a substance is opposing the flow of electric current? Current Voltage Resistance EMF 155. Which is very good conductor? Copper Cast iron Wrought iron Steel 156. 157. Which is mineral insulator? Glass Quartz Mica Porcelain 158. What is the total resistance if three resistances of 3 ohms, 9 ohms and 5 ohms are connected in series? 11 ohms 7 ohm 17 ohms 1/17 ohms 159. Which is same in series connection of resistors in a circuit? Current Voltage Resistance Power 160. Which law states that at constant termperature the current passing through a closed circuit is directly proportional to the potential difference and inversely proportional to the resistance? Ohm´s law Lenz´s law Newton´s law Hooke´s law 161. What is the resistance? I = 11.5 Amps V = 380 Volts R = _______Ohms 13 ohms 23 ohms 33 ohm 43 ohms 162. What is the current? R = 50 Ohms 220 Volts I =______Amps 4.1 Amps 4.2 Amps 4.3 Amps 4.4 Amps 163. : What is the voltage? R = 250 Ohms I = 0.44 Amps V = _____Volts 100 Volts 105 Volts 108 Volts 110 Volts 164. Which statement is correct according to ohm´s law? µ 1/V µ R µ V/R µ R/V 165. What is the filament resistance if a 6 volt bulb draws a current of 0.5 Amps? 12 W 10 W 3 W 1.2 W 166. 167. How much watt second in 1 watt hour? 1000 watt sec 2000 watt sec 3600 watt sec 4000 watt sec 168. What is the power if an emf of one volt causes a current flow of 1ampere? 1 watt 1 kilowatt 1 HP 1 Kilowatt hour 169. Which is equal to electric power? R2I watts I2R watts 170. How much power does it consumes if an electric heater draws a current of 10 amps at 200 volts? 2000 watts 2010 watts 2020 watts 2030 watts 171. What is the resistance of an electric iron if the rating of electric iron is 220 V and 500 watts? 94.8 ohms 95.8 ohms 96.8 ohms 97.8 ohms 172. What is the voltage of the immersion heater? P = 500 watts I = 2.27 Amps V = ______Volts 200.3 volts 210.3 volts 220.3 volts 230.3 volts 173. What is the unit of intensity of magnetic field? | wb/m m/wb Hertz Coloumb 174. Which law states about electromagnetic induction? Ohm´s law Hooke´s law Lenz´s law Faraday´s law 175. What is the formual for induced emf? B2L sinq volts BL sinq volts BLV sinq volts B2V sinq volts 176. What does EMF stands for? Electronic Magnetic Force Electronic Magnetic Force : Electro Magnetic Force Electromated Force 177. Which is the example for statically induced emf? | Generator Motor Transformer Refrigerator 178. Which is the example for dynamicallly induced Emf? Motor Generator Car Motor bike 179. Which is the unit electrical power? Volts Ohms Watts Ampere 180. What is the current Flow in the bulb? P = 550 watts R = 22 Ohms I = ______Amps | 2 Amps 3 Amps 4 Amps 5 Amps 181. What is the rated power if an adjustable resistor bears the following label 1.5 k ohms/ 0.08A? 9.2 watts : 9.4 watts 9.6 watts 9.8 watts 182. 183. What is the area of a square whose side is 18 cm? 26 cm2 36 cm2 72 cm2 324 cm2 184. What is the diagonal of a square plate whose side is 28 cm? 39.29 cm 39.39 cm 39.49 cm 39.59 cm 185. What is the side of a square whose area is 625 mm2? 15 mm 20 mm 25 mm 30 mm 186. What is the perimeter of a rectangle whose length and breadth are 20 cm and 18 cm? 56 cm 66 cm 76 mm 86 mm 187. What is the area of a rectangle, whose length and breadth are 10cm and 8cm respectively? 75 cm2 80 cm2 85 cm2 188. What is the area of a right angled triangle having a base 10 cm and height 5 cm? 20 sq.cm 25 sq.cm 30 sq.cm 35 sq.cm 189. What is the primeter of scalene. Triangle having sides of 40mm, 20mm and 28mm? 68 mm 78 mm 88 mm 98 mm 190. What is the area of an equilateral triangle of side 450 mm? 856.82 cm2 866.82 cm2 876.82 cm2 886.82 cm2 191. What is the area of a circle of diameter 50 cm? 1932.5 cm2 1942.5 cm2 | 1952.5 cm2 1962.5 cm2 192. What is the area of a (A) semicircle whose dia is 20 cm (d)? | 147.1 cm2 157.1 cm2 167.1 cm2 177.1 cm2 193. What is the area of a sector of a circle of radius 5 cm and its angle is 96°? 20.39 cm2 20.93 cm2 20.89 cm2 194. What is the formula for area and perimeter of a hexagon? | 3 x Ö3/4 a2 unit2 3a unit | 4 x Ö3/4 a2 unit2 4a unit 5 x Ö3/4 a2 unit2 5a uni 6 x Ö3/4 a2 unit2 6a uni 195. What is the area of an ellipse if the major and minor axes are 5 cm and 3 cm respectively? 27 cm2 37 cm2 47 cm2 57 cm2 196. Find the total surface area of cube whose side is 25 cm 3740 cm2 3745 cm2 3750 cm2 3755 cm2 197. Find the total surface area of a cast iron bar whose length, width and height are 20m, 15m and 12m 1340 m2 1440 m2 1540 m2 1640 m2 198. What is the formula for total surface area of a cylinder? | 2π r (h + r) unit2 π r (h + r) unit2 π rh unit2 2π rh unit2 199. What is the volume of a rectangular tank of 30 m length, 20m width and 10m height? 5900 m3 6000 m3 6100 m3 6200 m3 200. What is volume of the cylinder whose radius is 7 cm and height 12 cm? | 1842 c.c 1844 c.c 1846 c.c 1848 c.c 201. What is the volume of sphere of radius 7 cm? | 1436 cm3 1463 cm3 1346 cm3 1636 cm3 202. What is the formula for finding volume of a hollow cylinder having outer radius ´R´ inner radius ´r´ and height ´h´? π (R2 - r2) h unit3 π/3 (R2 - r2) h unit3 2/3 π(R2 - r2) h unit3 4/3 π (R2 - r2)h unit3 203. What is the capacity of a conical tank of radius 2 m and height 5m? 11 m3 21 m3 31 m3 41 m3 204. How many liters of water a cylindrical tank of radius 75 cm and height 100 cm can hold? 1766.25 liters 1767.25 liter 1768.25 liters 1769.25 liters 205. What is the total surface area of a cylinder having radius 2 metres and height 5 metres? | 86 sq.metre 88 sq.metre 90 sq.metre 92 sq.metre 206. Find the curved surface area of a cylinder 10 cm dia and 20 cm height? 620 cm2 628 cm2 630 cm2 638 cm2 207. What is the name of the object? Triangular prism Frustum of a pyramid Frustum of a cone Hexagonal prism 208. What is the ratio between the distance moved by the effort to the distance moved by the load? Mechanical advantage Velocity ratio Efficiency Fulcrum 209. What is the mechanical advantage, if a load of 1000 kg is lifted by a simple machine and effort applied is 250 kg? 6 8 3 4 210. What is the velocity ratio of a wheel and axle if the radii of wheel and axle are 375 mm and 75 mm respectively? 3 4 5 6 211. What is the velocity ratio of a simple machine of a mass 120 kg is lifted to a height of 5 metres by a force of 60 kg moving 15 metre. Calculate velocity ratio? 1 2 3 4 212. What is the efficiency of a simple screw jack having velocity ratio is 314.2 and mechanical advantage is 220? 0.6 0.65 0.7 0.75 213. How much load is lifted if an effort of 25 kg is applied to a simple machine having velocity ratio of 4 and efficiency 75%? 65 kg 70 kg 75 kg 80 kg 214. What is the name of fixed or supporting point of a lever? Mechanical advantage Fulcrum Effort Load 215. What effort required to lift a load of 150 kg in a machine is 75%? wheel and axle, if the velocity ratio is 2.5 and the efficiency of the 70 kg 80 kg 90 kg 100 kg 216. What is the distance of the load from the fulcrum called? Effort arm Load arm Power arm Effort 217. Which is example for first order lever? A wheel barrow A pair of scissors Fire tongs Lime squeezer 218. Which is example for second order lever? Common balance A pair of scissors Bottle opener Human forearm | 219. Which is example for third order lever? Common balance Forceps A pair of scissors Lime squeezer 220. Which type of levers is bell cranked lever? Curved lever 1st order lever 2nd order lever 3rd order lever 221. Which order lever is claw hammer? 1st order lever 2nd order lever : 3rd order lever Curved lever 222. Which is equal to sinq? Opposite Side/Hypotenuse Hypotenuse/Opposite side Adjacent Side/Hypotenuse Hypotenuse/Adjacent side 223. What is equal to cosq? Hypotenuse/Adjacent Side Adjacent Side/Hypotenuse Opposite side/Hypotenuse Hypotenuse/Opposite Side 224. What is equal to tanq? Opposite Side/Hypotenuse Adjacent Side/Hypotenuse Opposite Side/Adjacent Side Adjacent side/Opposite side 225. What is the value of tanq if sinq = 4/5 ? 4/5 5/3 3/4 4/3 226. What is the value of q if sinq = Ö3/2 ? 30° 45 60 90° 227. What is 1 + cot2q? sec2q cosec2q cot2q tan2q 228. What is the height of the wall where the ladder touches the wall if the ladder is 2.5 m long makes an angle of 60° with the ground? 4.13 m 4.23 m 2.165 m 4.43 m 229. What is the height of AC? 1.732 m 17.32 m 173.2 m 1732 m 230. What is the height of the building if a ladder at 45° touches the building placed 16 m from the base of the building? 15m 16m 1`7m 18m 231. What is the angle of q? 30° 45° 60° 90° 232. What is the term for the object seen higher than eye level? Angle of inclination Angle of friction Angle of elevation Angle of depression 233. 1 Foot = 12 inch 3 feet 220 yards none of the above 234. 1 yard- 12 inch 3 feet 220 inch none of the above 235. 1 Furlong- 1760 yards 220 yards 880 yards none of the above 236. 1 Mile 220 yards 880 yards 1760 yards none of the above 237. I Mile= 4 furlongs 8 furlongs 9 furlongs 880 yards 238. 1 Pound 8 ounces 16 ounces 12 ounces 20 ounces 239. 1 gram= 1000 miligrams 10000 miligrams 10 miligrams none of the above 240. 1 kilometre. 1000 metres 10000 metres 1000 grams 10 meters 241. 1 kilowatt 100 watts 100 watt hours 1000 watts none of the above 242. 10 mililiters= I deciliters 1 centiliters I liter none of the above 243. 4.545 liters= 1 gallon yes no 244. 1 yard 1.914 meters 0.914 meters 1/8 furlongs 2.914 meters 245. 1 inch = 2.54 cm ) 25.4 cm 1 / 36 yard none of the above 246. 1 cm=0.394 inch yes no 247. 1 meter =1.094 yards yes no 248. 2.2 pounds 2 1 3 0.5 249. 6.25 sq. cm = 1 sq. meter 1 sq. inch 1 inch none of the above 250. 1 quintal= 1000 kilograms yes no 251. 1 quintal= 100 kilograms yes no 252. 1 metric tonne 1000 kg 200 kg 100 kg none 253. 1 sq. foot is = ________than foot. foot more less same 254. 1 metric tonne is = ..................than one quintal. big small 255. 1 gallon= 4.55 litre yes no 256. 1 kg iron, is =.................. than the weight of cotton. less more same 257. 1 metric tonne is =........................ than tonne weight more less 258. 120° C.=.................. °F 280° F 40° F 80° F 248° F 259. 1 pound = 450 kg 4.53 kg 0.453 kg 0.543 kg. 260. Largest four digit No. which is divisible by 38 is: 9999 9994 9993 9992 261. If a number is multiple of 2, it is called: Odd number Even number Natural number Whole number 262. Which one is divisible by 3? 10 22 95 60 263. Which one is prime No.? 16 22 39 47 264. HCF of 66 and 330 is: 66 330 6 3 265. If product of two digits is 192 and HCF is 4, find their L.C.M. 48 40 24 42 266. Write 3 divide 5 in fraction form: 5/3 3/5 12/15 1/2 267. Write one point zero-zero eight in numerical form 0.008 1.008 1.08 1.8 268. 136.48 +15.642 + 67.59 219.640 219.712 219.702 219.604 269. 15 m 5 cm=..............m. 15.05 15.5 155 1.55 270. If the cost of 5 litre of petrol is Rs. 90 then find cost of 8 litre of petrol. 140 142 144 146 271. 992 m 80 cm divided by 4 = 240 m 20 cm 242 m 10 cm 200 m 20 cm 248 m 20 cm 272. 5.15 p.m. in 24 hour clock time is: 0515 hours 1715 hours 0715 hours