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MCQs

Total Questions : 206 | Page 13 of 21 pages
Question 121. Which of the following is a power transmitting element?
  1.    Nuts and bolts
  2.    Sprockets and chains
  3.    Axles
  4.    All of the above
 Discuss Question
Answer: Option B. -> Sprockets and chains
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 122. Machine elements such as bearings are _________
  1.    holding type elements
  2.    supporting type elements
  3.    power transmitting elements
  4.    all of the above
 Discuss Question
Answer: Option B. -> supporting type elements
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 123. The shaft directly connected to the power source is called as ______
  1.    line shaft
  2.    counter shaft
  3.    both a. and b.
  4.    none of the above
 Discuss Question
Answer: Option A. -> line shaft
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 124. Which of the following is a machine shaft?
  1.    Line shaft
  2.    Counter shaft
  3.    Crankshaft
  4.    All of the above
 Discuss Question
Answer: Option C. -> Crankshaft
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 125. Which of the following statements is/are true?
  1.    Axles are used to transmit power
  2.    Shafts and axles are rotating elements
  3.    Shafts transmit power while axles do not transmit power
  4.    All of the above
 Discuss Question
Answer: Option C. -> Shafts transmit power while axles do not transmit power
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 126. 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
  1.    1 and 2
  2.    1, 2 and 3
  3.    2, 3 and 4
  4.    1, 2 and 4
 Discuss Question
Answer: Option D. -> 1, 2 and 4
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 127. Which flat belt drive system has two pulleys mounted on driven shaft and one pulley on driving shaft?
  1.    Multiple belt drive
  2.    Cone pulley drive
  3.    Fast and loose pulley drive
  4.    None of the above
 Discuss Question
Answer: Option C. -> Fast and loose pulley drive
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 128. Why is an idler gear used in gear trains?
  1.    To obtain minimum centre distance between driving and driven shaft
  2.    To have required direction of rotation
  3.    Both a. and b.
  4.    None of the above
 Discuss Question
Answer: Option B. -> To have required direction of rotation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 129. In simple gear trains the direction of rotation of driven gear is opposite to the direction of rotation of driving gear only if______
  1.    even number of idler gears are present
  2.    odd number of idler gears are present
 Discuss Question
Answer: Option A. -> even number of idler gears are present
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 130. 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
  1.    10.36 kW
  2.    11.3 kW
  3.    7.068 kW
  4.    9.12 kW
 Discuss Question
Answer: Option C. -> 7.068 kW
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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