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MCQs

Total Questions : 2607 | Page 113 of 261 pages
Question 1121.

The plasticity is the property of a material which enables it to


  1.    regain its original shape after deformation when the external forces are removed
  2.    draw into wires by the application of a tensile force
  3.    resist fracture due to high impact loads
  4.    retain deformation produced under load permanently
 Discuss Question
Answer: Option D. -> retain deformation produced under load permanently


Question 1122.

 
A saddle key __________ power through frictional resistance only.


  1.    transmits
  2.    does not transmit
 Discuss Question
Answer: Option A. -> transmits


Question 1123.


A turn buckle is
used to connect two round rods subjected to tensile loading and
requiring subsequent adjustment for tightening or loosening.


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


Question 1124.

 
The face of the tooth is the


  1.    surface of the top of the tooth
  2.    surface of the tooth above the pitch surface
  3.    surface of the tooth below the pitch surface
  4.    width of the tooth measured along the pitch circle
 Discuss Question
Answer: Option B. -> surface of the tooth above the pitch surface


Question 1125.


The ends of the leaves of a semi-elliptical leaf spring are made triangular in order to


  1.    obtain variable moment of inertia (I) in each leaf
  2.    permit each leaf to act as a overhanging beam
  3.    have variable bending moment (M) in each leaf
  4.    make M/I constant throughout the length of the leaf
 Discuss Question
Answer: Option D. -> make M/I constant throughout the length of the leaf


Question 1126.
Shaft coupling is used in machinery to
  1.    introduce mechanical flexibility
  2.    introduce protection against over loads
  3.    reduce the transmission of shock loads
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these


Question 1127.

ldham coupling is used to connect two shafts


  1.    which are perfectly aligned
  2.    which are not in exact alignment
  3.    which have lateral misalignment
  4.    whose axes intersect at a small angle
 Discuss Question
Answer: Option C. -> which have lateral misalignment


Question 1128.
 
A screw is said to be over hauling screw, if the
  1.    friction angle is less than helix angle
  2.    friction angle is more than helix angle
  3.    friction angle is equal to helix angle
  4.    efficiency of screw is 100%
 Discuss Question
Answer: Option A. -> friction angle is less than helix angle


Question 1129.
 
For general industrial machinery, the ratio of the length of journal to its diameter is taken as
  1.    0.5 to 1 B
  2.    1 to2
  3.    3 to 5
  4.    5 to 10
 Discuss Question
Answer: Option B. -> 1 to2


Question 1130.
The spring mostly used in gramophones is
  1.    helical spring
  2.    conical spring
  3.    flat spiral spring
  4.    volute spring
 Discuss Question
Answer: Option C. -> flat spiral spring


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