MCQ Bank
A force of 12 N is applied perpendicularly on a spanner at a distance of 9m from a nut. The torque produced by the force will be
- A) 108 Nm
- B) 5 Nm
- C) 3 Nm
- D) 21 Nm
A nut has been tightened by a force of 180 N using an 8 cm long spanner. What length of a spanner is required to loosen the same nut with 150 N force
- A) 11cm
- B) 9.6cm
- C) 8.5cm
- D) 10.9cm
Which of the following is the valid pair for the formaiton of couple
- A) 5N, 6N,
- B) 4N, 5N
- C) 4N, 4N
- D) 2N, 3N
The couple moment and the force is divided to get the distance of the axis from the point of action of the force
- A) True
- B) False
- C)
- D)
The resultant couple moment is ____________ sum of various couples acting on the body.
- A) Scalar Triple
- B) Vector
- C) dot
- D) Scalar
If after a slight tilt the body returns to its previous equilibrium, then it is said to be in-----.
- A) unstable equilibrium
- B) zero equilibrium
- C) neutral equilibrium
- D) stable equilibrium
If 2nd condition of equilibrium is satisfied, body will be in--------.
- A) Static equilibrium
- B) Rotational equilibrium
- C) Dynamic equilibrium
- D) Translational equilibrium
The moment of a force is -----.
- A) base
- B) negative
- C) scalar
- D) vector
Turning effect of force is termed as-------.
- A) Action of force
- B) Action of torque
- C) Moment of torque
- D) Unstable action of force
A uniform rod CD of mass m is placed on two supports at A and B. If the rod is on the point of tilting about A then which of the following must be true about the reaction force at B?
- A) it would be zero
- B) it would be -ve
- C) it would be +ve
- D) it cannot be deternmined
The ability of an object to return to its original position after it has been tilted slightly is termed as-------.
- A) Equilibrium
- B) Stability
- C) Centre of gravity
- D) Turning effect
The resolved part of the force exerted by a body to another body along the tangent at the point of contact is called the ………
- A) Central force
- B) Centripetal force
- C) Centrifugal force
- D) Force of friction
For a smooth contact, coefficient of friction is always.........
- A) 1/4
- B) 1/2
- C) 1
- D) 0
The ratio of limiting friction to the normal reaction is called the ------ of the friction.
- A) coefficient
- B) none of these
- C) Direction
- D) Magnitude
If the limiting friction is 20N and the normal reaction is 40N, then the coefficient of friction is -----------
- A) 0.5
- B) 0
- C) 2
- D) 1
The resolved part of the force exerted by a body to another body along the normal at the point of contact is called the ………
- A) centrifugal force
- B) Normal reaction
- C) centripetal force
- D) central force
Which of the following is NOT a possible coefficient of friction?
- A) 0
- B) 0.5
- C) -0.5
- D) 1
The friction between two bodies is said to be -------- friction if neither body is on the point of sliding along the other.
- A) limiting
- B) none of these
- C) static
- D) dynamic
The friction between two bodies is said to be ----- friction if one body slides along the other.
- A) Static
- B) Limiting
- C) Dynamic
- D) None of these
If a body can have a smooth contact with every other body then such a body is said to be a ------ body.
- A) Rigid
- B) Rough
- C) None of these
- D) Smooth