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MCQs

Total Questions : 543 | Page 4 of 55 pages
Question 31. Klein's construction can be used when
  1.    Crank has a uniform angular velocity
  2.    Crank has non-uniform velocity
  3.    Crank has uniform angular acceleration
  4.    Crank has uniform angular velocity and angular acceleration
 Discuss Question
Answer: Option A. -> Crank has a uniform angular velocity
Question 32. For simple harmonic motion of the of follower, a cosine curve represents
  1.    Displacement diagram
  2.    Velocity diagram
  3.    Acceleration diagram
  4.    All of the above
 Discuss Question
Answer: Option C. -> Acceleration diagram
Question 33. For the same lift and same angle of ascent, a smaller base circle will give
  1.    A small value of pressure angle
  2.    A large value of pressure angle
  3.    There is no such relation with pressure angle
  4.    Something else
 Discuss Question
Answer: Option B. -> A large value of pressure angle
Question 34. The locus of a point on a thread unwound from a cylinder will be
  1.    A straight line
  2.    A circle
  3.    Involute
  4.    Cycloidal
 Discuss Question
Answer: Option C. -> Involute
Question 35. Klein's construction gives a graphic construction for
  1.    Slider-crank mechanism
  2.    Velocity polygon
  3.    Acceleration polygon
  4.    Four bar chain mechanism
 Discuss Question
Answer: Option C. -> Acceleration polygon
Question 36. The axis of precession is __________ to the plane in which the axis of spin is going to rotate.
  1.    Parallel
  2.    Perpendicular
  3.    Both A and B
  4.    None of these
 Discuss Question
Answer: Option B. -> Perpendicular
Question 37. In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be
  1.    Less sensitive
  2.    More sensitive
  3.    Unaffected of sensitivity
  4.    Isochronous
 Discuss Question
Answer: Option A. -> Less sensitive
Question 38. If the pressure angle is __________, a reciprocating follower will jam in its bearings.
  1.    Small
  2.    Too small
  3.    Large
  4.    Too large
 Discuss Question
Answer: Option D. -> Too large
Question 39. When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be
  1.    Stable
  2.    Unstable
  3.    Isochronous
  4.    None of these
 Discuss Question
Answer: Option B. -> Unstable
Question 40. Governor is used in automobile to
  1.    Decrease the variation of speed
  2.    Maximize the fuel economy
  3.    Limit the vehicle speed
  4.    Maintain constant engine speed
 Discuss Question
Answer: Option C. -> Limit the vehicle speed

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