Couple is having a combination of two forces. They are different in magnitude.

• A) True
• B) False
• C)
• D)

If the forces on the couple are 5N each, then which of the following is the resultant of the forces acting on the couple>

• A) 10
• B) 25
• C) 2.5
• D) 0

As we have learnt that Moment of force is F × d, so formula for weight in relevance to moment of force will be--------.

• A) mg/d
• B) mg+d
• C) mg-d
• D) mg*d

The distance between the forces acting in the couple is ____________

• A) infinity
• B) zero
• C) a circular loop
• D) finite

A couple moment is a -------- vector.

• A) del
• B) scalar
• C) free
• D) gradient

Which of the following is correct for the moment of couple M caused by two forces of same magnitude F and is separated by a distance of r?

• A) M=-r.F
• B) M=r.F
• C) M=r*F
• D) M=-(r*F)

The torque depends upon........

• A) mass
• B) both force and moment arm
• C) force only
• D) moment arm only

A line along which a force act is called-----.

• A) a line of acting torque
• B) moment arm
• C) a line of action of force
• D) axis of rotation

The perpendicular distance between the axis of rotation and the line of action of the force is called the-------.

• A) moment arm
• B) displacement
• C) inertia
• D) velocity

Moment of force=--------.

• A) F - d, where F is force and d is moment arm
• B) F + d, where F is force and d is moment arm
• C) F/d, where F is force and d is moment arm
• D) F*d, where F is force and d is moment arm

When a meter rule is not pivoted at 50 cm, its weight ……..

• A) Won’t cause a turning effect
• B) Will cause a turning effect
• C) Will be zero
• D) Won’t have magnitude

The easiest way to open a heavy door is by applying the force---------.

• A) in the middle of the door
• B) near the hinges
• C) at the top of the door
• D) at the edge of the door far from hinges

The resultant force acting in the couple is ----.

• A) twice the magnitude of single force
• B) infinite
• C) zero
• D) Half the magnitude of single force

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