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MCQs

Total Questions : 735 | Page 1 of 74 pages
Question 1. 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 2. 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 3. A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal
  1.    density of metal can’t be determined
  2.    metal is twice as dense as water
  3.    metal will float in water
  4.    metal is twice as dense as unknown fluid
 Discuss Question
Answer: Option A. -> density of metal can’t be determined
Question 4. Coulomb friction is the friction between
  1.    bodies having relative motion
  2.    two dry surfaces
  3.    two lubricated surfaces
  4.    solids and liquids
 Discuss Question
Answer: Option A. -> bodies having relative motion
Question 5. Which of the following is the locus of a point that moves in such a manner that its distance from a fixed point is equal to its distance from a fixed line multiplied by a constant greater than one
  1.    ellipse
  2.    hyperbola
  3.    parabola
  4.    circle
 Discuss Question
Answer: Option B. -> hyperbola
Question 6. The unit of force in S.I. units is
  1.    kilogram
  2.    newton
  3.    watt
  4.    dyne
 Discuss Question
Answer: Option B. -> newton
Question 7. The unit of work or energy in S.I. units is
  1.    newton
  2.    pascal
  3.    watt
  4.    joule.
 Discuss Question
Answer: Option D. -> joule.
Question 8. The unit of power in S.I. units is
  1.    newton meter
  2.    watt
  3.    joule
  4.    kilogram meter/sec.
 Discuss Question
Answer: Option B. -> watt
Question 9. The C.G. of a plane lamina will not be at its geometrical centre in the case of a
  1.    right angled triangle
  2.    equilateral triangle
  3.    square
  4.    circle
 Discuss Question
Answer: Option A. -> right angled triangle
Question 10. Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction
  1.    along the plane
  2.    horizontally
  3.    vertically
  4.    at an angle equal to the angle of friction to the inclined plane
 Discuss Question
Answer: Option D. -> at an angle equal to the angle of friction to the inclined plane

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