Engineering :: Applied Mechanics

@ : Home > Mechanical Engineering > Applied Mechanics

131.

Coulomb's law for the force between electric charges most closely resembles

A.	Newton's laws of motion	B.	Law of conservation of energy
C.	Gauss's theorem	D.	Newton's law of gravitation
E.	None of the above

132.

The satellite moves in a circle around the earth. The radius of this circle is equal to one-half the radius of the moons orbit. The satellite will complete one revolution in

B.	1 lunar month
C.	2-3/4 lunar month	D.	2-2/3 lunar month

133.

A single purchase crab has a handle 45 cm long and a drum of 25 cm diameter. The pinion has 30 teeth and spur has 150 teeth. The efficiency of the machine is 75%. If the maximum force that can be applied is 500 newtons, the maximum load that can be lifted will be

A.	1250 N	B.	6750 N
C.	9860 N	D.	13500 N
E.	20250 N

134.

The area under stress-strain curve represents

A.	Hardness of material	B.	Breaking strength of the material
C.	Energy required to cause failure	D.	Malleabbility of material
E.	Toughness of material

135.

Which of the following is not a projectile?

A.	Bullet coming out of a revolver	B.	Arrow released from a bow
C.	Lifting of a balloon	D.	Throwing a cricket ball from one player to another
E.	None of the above

136.

The force which produces an acceleration of 1 m/sec2 in a mass of 1 kg is called

A.	One erg	B.	100 ergs
C.	one watt	D.	one Newton
E.	one joule

137.

One joule is equal to

A.	108 ergs	B.	107 ergs
C.	106 ergs	D.	105 ergs
E.	104 ergs

138.

The ratio of moment of inertia of a circular body about x axis to that about y axis is

A.	1
C.	1?4	D.	?
E.	?

139.

A grinding wheel is rotating at 3000 rpm. When the switch is turned off the wheel stops in 10 seconds. The uniform deceleration of the wheel was

A.	1 rad/s2	B.	4 rad/s2
C.	10.4 rad/s2	D.	31.4 rad/s2
E.	62.8 rad/s2

140.

In planetary motion

A.	The total angular momentum remains constant	B.	The total linear momentum remains constant
C.	The total linear momentum is zero	D.	The total angular momentum is zero
E.	None of the above