Creep in belt is due to

Creep in belt drive is due to

A

weak material of the belt

B

weak material of the pulley

C

uneven extensions and contractions of the belt when it passes from tight side to slack side

D

expansion of the belt

The creep in the belt is due to

A

Effect of temperature on belt

B

Material of belt

C

Unequal extensions in the belt due to tight and slack side tensions

D

Stresses beyond elastic limit of belt material

If C is creep coefficient, f is original pre-stress in concrete, m is modular ratio, E is Young's modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is:

A

(1 - C) mf - eE

B

(C - 1) mf + eE

C

(C - 1) mf - eE

D

(1 - C) mf + eE

The power transmitted by a belt is maximum when the maximum tension in the belt is _________ of centrifugal tension.

A

One-third

B

Two-third

C

Double

D

Three times

The tension on the slack side of the belt is __________ the tension on the tight side of the belt.

A

Equal to

B

Less than

C

Greater than

D

None of these

In multi V-belt transmission, if one of the belt is broken, we have to change the

A

Broken belt

B

Broken belt and its adjacent belts

C

All the belts

D

There is no need of changing any one as remaining belts can take care of transmission of load

A pulley and belt in a belt drive form a

A

Cylindrical pair

B

Turning pair

C

Rolling pair

D

Sliding pair

In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set to

A

Reduce vibration

B

Reduce slip

C

Ensure uniform loading

D

Ensure proper alignment

The velocity of the belt for maximum power is (where m = Mass of the belt in kg per meter length)

A

$$\frac{{\text{T}}}{3}$$

B

$$\frac{{{\text{Tg}}}}{3}$$

C

$$\sqrt {\frac{{\text{T}}}{{3{\text{m}}}}} $$

D

$$\sqrt {\frac{{3{\text{m}}}}{{\text{T}}}} $$

In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set in order to

A

Reduce vibration

B

Reduce slip

C

Ensure uniform loading

D

Ensure proper alignment

Creep in belt is due to

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