1) Which of the following is a power transmitting element? a. Nuts and bolts b. Sprockets and chains c. Axles d. All of the above
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2) Machine elements such as bearings are _________ a. holding type elements b. supporting type elements c. power transmitting elements d. all of the above
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3) The shaft directly connected to the power source is called as ______ a. line shaft b. counter shaft c. both a. and b. d. none of the above
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4) Which of the following is a machine shaft? a. Line shaft b. Counter shaft c. Crankshaft d. All of the above
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5) Which of the following statements is/are true? a. Axles are used to transmit power b. Shafts and axles are rotating elements c. Shafts transmit power while axles do not transmit power d. All of the above
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6) Which flat belt drive system has two pulleys mounted on driven shaft and one pulley on driving shaft? a. Multiple belt drive b. Cone pulley drive c. Fast and loose pulley drive d. None of the above
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7) Which of the following statements are false for belt drives? 1. Belt drive is used in applications having constant speed drive 2. Belt drives can be used at extremely high speeds 3. Belt drives have low power transmitting capacity 4. Belt drives need continuous lubrication a. 1 and 2 b. 1, 2 and 3 c. 2, 3 and 4 d. 1, 2 and 4
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8) Determine power rating of an electric motor if it runs at 1440 r.p.m and line shaft transmits torque of 75 Nm. Assume Reduction ratio = 1.6 a. 10.36 kW b. 11.3 kW c. 7.068 kW d. 9.12 kW
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9) In simple gear trains the direction of rotation of driven gear is opposite to the direction of rotation of driving gear only if______ a. even number of idler gears are present b. odd number of idler gears are present
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10) Why is an idler gear used in gear trains? a. To obtain minimum centre distance between driving and driven shaft b. To have required direction of rotation c. Both a. and b. d. None of the above
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