MCQs

Total Questions : 2607 | Page 43 of 261 pages
Question 421. The backlash for spur gears depends upon
  1.    Module
  2.    Tooth profile
  3.    Both module and pitch line velocity
  4.    Pitch line velocity
 Discuss Question
Answer: Option C. -> Both module and pitch line velocity
Question 422. When an open coiled helical compression spring is subjected to an axial compressive load, the stress induced in the wire is
  1.    Tensile stress
  2.    Compressive stress
  3.    Shear stress
  4.    Bending stress
 Discuss Question
Answer: Option C. -> Shear stress
Question 423. The shear stress at a point in a shaft subjected to a torque is
  1.    Directly proportional to the polar moment of inertia and to the distance of the point from the axis
  2.    Directly proportional to the applied torque and inversely proportional to the polar moment of inertia
  3.    Directly proportional to the applied torque and the polar moment of inertia
  4.    Inversely proportional to the applied torque and the polar moment of inertia
 Discuss Question
Answer: Option B. -> Directly proportional to the applied torque and inversely proportional to the polar moment of inertia
Question 424. The edges of a boiler plate are bevelled to an angle of
  1.    30°
  2.    45°
  3.    60°
  4.    80°
 Discuss Question
Answer: Option D. -> 80°
Question 425. A chain drive transmits __________ power as compared to belt drive.
  1.    More
  2.    Less
  3.    Same
  4.    None of these
 Discuss Question
Answer: Option A. -> More
Question 426. 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
Question 427. The radial distance from the __________ to the clearance circle is called working depth.
  1.    Addendum circle
  2.    Dedendum circle
  3.    Pitch circle
  4.    None of these
 Discuss Question
Answer: Option A. -> Addendum circle
Question 428. The building up of worn and undersized parts, subjected to repeated loads by electroplating is
  1.    Best method
  2.    Extremely hazardous
  3.    Has no effect as regards fatigue strength
  4.    Cheapest method
 Discuss Question
Answer: Option A. -> Best method
Question 429. Which of the following screw thread is adopted for power transmission in either direction?
  1.    Acme threads
  2.    Square threads
  3.    Buttress threads
  4.    Multiple threads
 Discuss Question
Answer: Option B. -> Square threads
Question 430. A triple riveted butt joint with double straps of unequal width is to be designed for a boiler shell. The pitch of the rivets in the outer row is double the pitch in the inner row and zigzag riveting is proposed. Which of the following statement is correct?
  1.    There are four rivets per pitch length, all in double shear
  2.    There are four rivets per pitch length, out of which two are in single shear and two are in double shear
  3.    There are five rivets per pitch length, all in double shear
  4.    There are five rivets per pitch length, out of which four are in double shear and one is in single shear
 Discuss Question
Answer: Option D. -> There are five rivets per pitch length, out of which four are in double shear and one is in single shear

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