Which of the following is false statement in respect of differences between machine and structure___________________?

A. Machines transmit mechanical work, whereas structures transmit forces
B. In machines, relative motion exists be-tween its members, whereas same does hot exist in case of structures
C. Machines modify movement and work, whereas structures modify forces
D. Efficiency of machines as well as structures is below 100%

To transmit power from one rotating shaft to another whose axes are neither parallel nor intersecting, use__________________?

A. Spur gear
B. Spiral gear
C. Bevel gear
D. Worm gear

If D1 and D2 be the diameters of driver and driven pulleys, then belt speed is proportional to__________________?

A. D1/d2
B. D2/d1
C. D1-d2.
D. D1

To obviate axial thrust, following gear drive is used_____________________?

A. Double helical gears having opposite teeth
B. Double helical gears having identical teeth
C. Single helical gear in which one of the teeth of helix angle a is more
D. Mutter gears

For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimidstroke respectively, is__________________?

A. Maximum and zero
B. Zero and maximum
C. Minimum and maximum
D. Zero and minimum

The locus of a point on a thread unwound from a cylinder will be___________________?

A. A straight line
B. A circle
C. Involute
D. Cycloidal

Creep in belt drive is due to____________________?

A. Material of the pulley
B. Material of the belt
C. Larger size of the driver pulley
D. Uneven extensions and contractions due to varying tension

T Jie horse power transmitted by a belt is dependent upon _________________?

A. tension on tight side of belt
B. tension on slack side of belt
C. radius of pulley
D. speed of pulley

The moment on the pulley which produces rotation is called ___________________?

A. inertia
B. momentum
C. moment of momentum
D. work

Idler pulley is used___________________?

A. For changing the direction of motion of the belt
B. For applying tension
C. For increasing -velocity ratio
D. All of the above