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Total Questions : 2607 | Page 73 of 261 pages
Question 721. An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load W. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'.
  1.    one-eighth
  2.    one-fourth
  3.    one-half
  4.    double
 Discuss Question
Answer: Option A. -> one-eighth
Answer: (a).one-eighth
Question 722. 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
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> Yes
Answer: (a).Yes
Question 723. During hot working of metals,
  1.    porosity of the metal is largely eliminated
  2.    grain structure of the metal is refined
  3.    mechanical properties are improved due of refinement of grains
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Answer: (d).all of the above
Question 724. The velocity factor for very accurately cut and ground metallic gears operating at velocities upto __________ is equal to 6/6 + v.
  1.    10 m/s
  2.    12.5 m/s
  3.    15 m/s
  4.    20 m/s
 Discuss Question
Answer: Option D. -> 20 m/s
Answer: (d).20 m/s
Question 725. The power transmitted by means of a belt depends upon
  1.    velocity of the belt
  2.    tension under which the belt is placed on the pulleys
  3.    arc of contact between the belt and the smaller pulley
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Answer: (d).all of the above
Question 726. Which of the following coupling is used to connect two shafts which have both lateral and angular misalignment ?
  1.    Bushed pin type coupling
  2.    Universal coupling
  3.    Oldham coupling
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 727. In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set in order to
  1.    reduce vibration
  2.    reduce slip
  3.    ensure uniform loading
  4.    ensure proper alignment
 Discuss Question
Answer: Option C. -> ensure uniform loading
Answer: (c).ensure uniform loading
Question 728. Multiple threads are used to secure
  1.    low efficiency
  2.    high efficiency
  3.    high load lifting capacity
  4.    high mechanical advantage
 Discuss Question
Answer: Option B. -> high efficiency
Answer: (b).high efficiency
Question 729. The fatigue limit of a material is greatly decreased by poor surface conditions.
  1.    Agree
  2.    Disagree
  3.    Can't say
  4.    None of these
 Discuss Question
Answer: Option A. -> Agree
Answer: (a).Agree
Question 730. The value of Lewis form factor used in design of gears is
  1.    dependent on number of teeth of a gear
  2.    dependent on system of teeth
  3.    independent of size of teeth
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these

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