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MCQs

Total Questions : 1033 | Page 99 of 104 pages
Question 981. If a rigid body is in equilibrium under the action of three forces, then
  1.    the lines of action of these forces meet in a point & the lines of action of these forces are parallel
  2.    the lines of action of these forces meet in a point
  3.    these forces are equal
  4.    the lines of action of these forces are parallel
 Discuss Question
Answer: Option A. -> the lines of action of these forces meet in a point & the lines of action of these forces are parallel
Question 982. If a number of forces act simultaneously on a particle, it is possible
  1.    To replace them by a single force
  2.    To replace them by a couple
  3.    To replace them by a single force through C.G.
  4.    Not a replace them by a single force
 Discuss Question
Answer: Option A. -> To replace them by a single force
Question 983. A pair of smith’s tongs is an example of the lever of
  1.    third order
  2.    second order
  3.    first order
  4.    zeioth order
 Discuss Question
Answer: Option B. -> second order
Question 984. Which of the following is not the unit of power ?
  1.    hp (horse power)
  2.    kg m/sec
  3.    kW (kilowatt)
  4.    kcal/kg sec.
 Discuss Question
Answer: Option D. -> kcal/kg sec.
Question 985. A cable with a uniformly distributed load per horizontal metre run will take the following shape
  1.    Hyperbola
  2.    Elliptical
  3.    Parabola
  4.    Straight line
 Discuss Question
Answer: Option C. -> Parabola
Question 986. Limiting force of friction is the
  1.    The friction force acting when the body is just about to move
  2.    the friction force acting when the body is in motion
  3.    Ratio of limiting friction and normal reaction
  4.    Tangent of angle between normal reaction and the resultant of normal reaction and limiting friction
 Discuss Question
Answer: Option A. -> The friction force acting when the body is just about to move
Question 987. A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve
  1.    elliptical
  2.    hyperbola
  3.    catenary
  4.    parabola
 Discuss Question
Answer: Option D. -> parabola
Question 988. D Alembert’s principle is used for
  1.    determining stresses in the truss
  2.    reducing the problem of kinetics to equivalent statics problem
  3.    stability of floating bodies
  4.    designing safe structures
 Discuss Question
Answer: Option B. -> reducing the problem of kinetics to equivalent statics problem
Question 989. A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly
  1.    62.5 m
  2.    38 m
  3.    96 m
  4.    124 m
 Discuss Question
Answer: Option A. -> 62.5 m
Question 990. Tangent of angle of friction is equal to
  1.    limiting friction
  2.    angle of repose
  3.    coefficient of friction
  4.    kinetic friction
 Discuss Question
Answer: Option C. -> coefficient of friction

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