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MCQs

Total Questions : 2607 | Page 120 of 261 pages
Question 1191.

Crowning on pulley helps


  1.    n decreasing the slip of the belt
  2.    in increasing the slip of the belt
  3.    to keep the belt in centre on a pulley while it is in motion
  4.    to increase pulley life
 Discuss Question
Answer: Option C. -> to keep the belt in centre on a pulley while it is in motion


Question 1192.
 
In the levers of __________ type, the mechanical advantage is less than one.
  1.    first
  2.    second
  3.    third
 Discuss Question
Answer: Option C. -> third


Question 1193.

The property of a
bearing material which has the ability to accomodate shaft deflections
and bearing inaccuracies by plastic deformation without excessive wear
and heating, is known as


  1.    bondability
  2.    embeddability
  3.    comformability
  4.    fatigue strength
 Discuss Question
Answer: Option C. -> comformability


Question 1194.


The wear load should be __________ the dynamic load.


  1.    equal to
  2.    less than
  3.    greater than
 Discuss Question
Answer: Option B. -> less than


Question 1195.

A screw is specified by its


  1.    major diameter
  2.    minor diameter
  3.    pitch diameter
  4.    pitch
 Discuss Question
Answer: Option A. -> major diameter


Question 1196.
 
Stress concentration factor is defined as the ratio of
  1.    maximum stress to the endurance limit
  2.    nominal stress to the enurance limit
  3.    maximum stress to the nominal stress
  4.    nominal stress to the maximum stress
 Discuss Question
Answer: Option C. -> maximum stress to the nominal stress


Question 1197.

.Antifriction bearings are


  1.    thick lubricated bearings
  2.    plastic bearings
  3.    thin lubricated bearings
  4.    ball and roller bearings
 Discuss Question
Answer: Option D. -> ball and roller bearings


Question 1198.


When two
parallel and coplaner shafts are connected by gears having teeth
parallel to the axis of the shaft, the arrangement is known as spiral
gearing.


  1.    Yes
  2.    No
 Discuss Question
Answer: Option B. -> No


Question 1199.
Oldham coupling is used to transmit power between two parallel shafts which are slightly offset.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True


Question 1200.


When a machine member is subjected to torsion, the torsional shear stress set up in the member is


  1.    zero at both the centroidal axis and outer surface of the member
  2.    maximum at both the centroidal axis and outer surface of the member
  3.    zero at the centroidal axis and maximum at the outer surface of the member
  4.    maximum at the centroidal axis and zero at the outer surface of the member
 Discuss Question
Answer: Option B. -> maximum at both the centroidal axis and outer surface of the member


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