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MCQs

Total Questions : 1033 | Page 6 of 104 pages
Question 51. A pair of smith’s tongs is an example of the lever of
  1.     zeioth order
  2.     first order
  3.     second order
  4.     third order
 Discuss Question
Answer: Option C. ->  second order
Question 52. Limiting force of friction is the
  1.     Tangent of angle between normal reaction and the resultant of normal reaction and limiting friction
  2.     Ratio of limiting friction and normal reaction
  3.     The friction force acting when the body is just about to move
  4.     The friction force acting when the body is in motion
 Discuss Question
Answer: Option C. ->  The friction force acting when the body is just about to move
Question 53. The possible loading in various members of framed structures are
  1.     compression or tension
  2.     buckling or shear
  3.     shear or tension
  4.     all of the above
 Discuss Question
Answer: Option A. ->  compression or tension
Question 54. Angle of friction is the
  1.     Angle between normal reaction and the resultant of normal reaction and the limiting friction
  2.     Ratio of limiting friction and normal reaction
  3.     The ratio of minimum friction force to the friction force acting when the body is just about to move
  4.     The ratio of minimum friction force to friction force acting when the body is in motion
 Discuss Question
Answer: Option A. ->  Angle between normal reaction and the resultant of normal reaction and the limiting friction
Question 55. Which of the following is not the unit of energy
  1.     kg m
  2.     kcal
  3.     wattr
  4.     watt hours
 Discuss Question
Answer: Option C. ->  wattr
Question 56. Pick up wrong statement about friction force for dry surfaces. friction force is
  1.     proportional to normal load between the surfaces
  2.     dependent on the materials of contact surface
  3.     proportional to velocity of sliding
  4.     independent of the area of contact surfaces
 Discuss Question
Answer: Option C. ->  proportional to velocity of sliding
Question 57. If a rigid body is in equilibrium under the action of three forces, then
  1.     these forces are equal
  2.     the lines of action of these forces meet in a point
  3.     the lines of action of these forces are parallel
  4.     (B) and (C) above
 Discuss Question
Answer: Option D. ->  (B) and (C) above
Question 58. The product of either force of couple with the arm of the couple is called
  1.     resultant couple
  2.     moment of the forces
  3.     resulting couple
  4.     moment of the couple
 Discuss Question
Answer: Option D. ->  moment of the couple
Question 59. The weight of a body is due to
  1.     centripetal force of earth
  2.     gravitational pull exerted by the earth
  3.     force of attraction experienced by par-ticles
  4.     gravitational force of attraction towards the centre of the earth.
 Discuss Question
Answer: Option D. ->  gravitational force of attraction towards the centre of the earth.
Question 60. A trolley wire weighs 1.2 kg per meter length. the ends of the wire are attached to two poles 20 meters apart. if the horizontal tension is 1500 kg find the dip in the middle of the span
  1.     2.5 cm
  2.     3.0 cm
  3.     4.0 cm
  4.     5.0 cm
 Discuss Question
Answer: Option C. ->  4.0 cm

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