When the belt is transmitting maximum power,

When a belt drive is transmitting maximum power,

A

Effective tension is equal to centrifugal tension

B

Effective tension is half of centrifugal tension

C

Driving tension on slack side is equal to centrifugal tension

D

Driving tension on tight side is twice the centrifugal tension

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 Token-Ring architecture was developed for a more efficient way to determine who should be transmitting at any one time. With Ethernet, collisions may take place, causing the transmitting computers to have to retransmit their data. The use of token guarantees that only one computer can transmit at a time. What happens as the network increases in size? Choose the best answer

A

An additional token is added for every 1,000 nodes

B

The speed of the Token-Ring network must be 16Mbps if the number of nodes is greater then 500

C

The network becomes less efficient

D

After the number of nodes exceeds 550, the Multistation Access Unit must be replaced by the more powerful Hyperstation Unified Bandwidth device

E

The network becomes more efficient

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

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

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

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

The ratio of driving tensions in V-belt drives is __________ flat belt drives.

A

Equal to

B

sin$$\,\alpha $$ times more than

C

sin$$\,\alpha $$ times less than

D

cosec$$\,\alpha $$ times more than

When the belt is transmitting maximum power,

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