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MCQs

Total Questions : 2607 | Page 97 of 261 pages
Question 961.
 
The included angle for the V-belt is usually
  1.    `10^circ`-`20^circ`
  2.    `30^circ`-`40^circ`
  3.    `40^circ`-`60^circ`
  4.    `60^circ`-`80^circ`
 Discuss Question
Answer: Option B. -> `30^circ`-`40^circ`


Question 962.

In static loading, stress concentration is more serious in


  1.    brittle materials
  2.    ductile materials
  3.    brittle as well as ductile materials
  4.    elastic materials
 Discuss Question
Answer: Option A. -> brittle materials


Question 963.
 
A tapered key which fits in a key way in the hub and is flat on the shaft, is known as
  1.    feather key
  2.    gib-head key
  3.    wood ruff key
  4.    flat saddle key
 Discuss Question
Answer: Option D. -> flat saddle key


Question 964.

The expansion joint is mostly used for pipes which carry steam at __________ pressures.


  1.    low
  2.    high
 Discuss Question
Answer: Option B. -> high


Question 965.
 
If the helix angle of a helical gear is increased, the load carrying capacity of the tooth increases.
  1.    Correct
  2.    Incorrect
 Discuss Question
Answer: Option B. -> Incorrect


Question 966.
.A compound belt drive is used when
  1.    shafts are arranged parallel and rotate in the opposite directions
  2.    shafts are arranged parallel and rotate in the same directions
  3.    shafts are arranged at right angles and rotate in one definite direction
  4.    none of the above
 Discuss Question
Answer: Option D. -> none of the above


Question 967.
 
When the top of a tooth undercuts the root on the mating gear, it is known as interference.
  1.    Yes
  2.    No
 Discuss Question
Answer: Option A. -> Yes


Question 968.

In designing a key, it is assumed that the distribution of forces along the length of key


  1.    varies linearly
  2.    is uniform throughout
  3.    varies exponentially, being more at the torque-input end
  4.    varies exponentially, being less at the torque-input end
 Discuss Question
Answer: Option B. -> is uniform throughout


Question 969.

The bearing characteristic number in a hydrodynamic bearing depends upon


  1.    length, width and load
  2.    length, width and speed
  3.    viscosity, speed and load
  4.    viscosity, speed and bearing pressure
 Discuss Question
Answer: Option D. -> viscosity, speed and bearing pressure


Question 970.
 
In a belt drive, the velocity ratio is the inverse ratio of the diameters of driving and driven pulleys.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True


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