The power transmitted by a belt drive is maximum when the centrifugal tension as compared to the maximum tension is

Consider the following statements regarding V-belt drive : 1. The groove angle of the sleeve is less than the belt section angle 2. The efficiency of a V-belt drive is higher than that of a flat belt drive 3. The groove angle is so made that the belt gets wedged in the groove Which of the above statements are correct ?

A

1, 2 and 3

B

1 and 2 only

C

1 and 3 only

D

2 and 3 only

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 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

For a flat open-belt drive, the belt speed is 880 m/min and the power transmitted is 22.5 kW. What is the difference between the tight side and slack side tensions of the belt drive?

A

900 N

B

6450 N

C

1535 N

D

1000 N

When the belt is transmitting maximum power, the belt speed should be (Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N))

A

$$\sqrt {\frac{{{\text{P}}\max }}{{2{\text{m}}}}} $$

B

$$\sqrt {\frac{{{\text{P}}\max }}{{3{\text{m}}}}} $$

C

$$\sqrt {\frac{{{\text{P}}\max }}{{\text{m}}}} $$

D

$$\sqrt {\frac{{{\text{3m}}}}{{{\text{P}}\max }}} $$

When the belt is transmitting maximum power, the belt speed should be
(Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N))

A

$$\sqrt {\frac{{{\text{P}}\max }}{{2{\text{m}}}}} $$

B

$$\sqrt {\frac{{{\text{P}}\max }}{{3{\text{m}}}}} $$

C

$$\sqrt {\frac{{{\text{P}}\max }}{{\text{m}}}} $$

D

$$\sqrt {\frac{{{\text{3m}}}}{{{\text{P}}\max }}} $$

In belt drive power transmitted is given by: (Where Tt, Ts, and v are tight side tension, slack side tension and linear velocity of belt respectively)

A

$\frac{{\left( {{T_t} - {T_s}} \right)}}{{2v}}$

B

$ \frac{{\left( {{T_t} + {T_s}} \right)}}{{2v}}$

C

(T_t - T_s)v

D

(T_t + T_s)v

The power transmitted by belt drive will be maximum, if the maximum tension in the belt is

A

Twice the tension in the slack side

B

Equal to the tension in the slack side

C

Three times the tension due to centrifugal force

D

Equal to the tension due to centrifugal force

The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to (Where, $${{\text{P}}_{\text{c}}}$$ = tension in belt due to centrifugal force)

A

$$3{{\text{P}}_{\text{c}}}$$

B

$$1{{\text{P}}_{\text{c}}}$$

C

$$\frac{{{{\text{P}}_{\text{c}}}}}{3}$$

D

$$2{{\text{P}}_{\text{c}}}$$

The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to
(Where, $${{\text{P}}_{\text{c}}}$$ = tension in belt due to centrifugal force)

A

$$3{{\text{P}}_{\text{c}}}$$

B

$${{\text{P}}_{\text{c}}}$$

C

$$\frac{{{{\text{P}}_{\text{c}}}}}{3}$$

D

$$2{{\text{P}}_{\text{c}}}$$

The power transmitted by a belt drive is maximum when the centrifugal tension as compared to the maximum tension is

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