Kinematics and Theory of Machines (3131906) MCQs

MCQs of Belt, Ropes and Chains

Showing 11 to 20 out of 47 Questions
11.

The ratio of tight and slack side tensions in a V-belt or rope is _____.

(a)

eμθSinα

(b)

eμθSecα

(c)

eμθCosα

(d)

eμθCosecα

Answer:

Option (d)

12.

Two pulleys of diameters d1 and d2 and at distance x apart are connected by means of an open belt drive. The length of the belt is _____.

(a)

π2d1+d2+2x+d1+d224x

(b)

π2d1-d2+2x+d1-d224x

(c)

π2d1+d2+2x+d1-d224x

(d)

π2d1-d2+2x+d1+d224x

Answer:

Option (c)

13.

The power transmitted by a belt is maximum when the maximum tension in the belt (T) is equal to ______.

(a)

Tc

(b)

2 Tc

(c)

3 Tc

(d)

4 Tc

Answer:

Option (c)

14.

The velocity of the belt for maximum power is _______.

(a)

T3m

(b)

T4m

(c)

T5m

(d)

T6m

Answer:

Option (a)

15.

The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (d) is given by ______.

(a)

p=d sin60oT

(b)

p=d sin90oT

(c)

p=d sin120oT

(d)

p=d sin180oT

Answer:

Option (d)

16.

In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then _______.

(a)

an open belt drive is recommended

(b)

a cross belt drive is recommended

(c)

both open belt drive and cross belt drive are recommended

(d)

the drive is recommended depending upon the torque transmitted

Answer:

Option (b)

17.

V-belts are usually used for _____.

(a)

long drives

(b)

short drives

(c)

either long drives or short drives

(d)

neither long drives nor short drives

Answer:

Option (b)

18.

In a multiple V-belt drive, if one of the belts is broken, then we should replace _______.

(a)

the broken belt only

(b)

all the belts

(c)

the broken belt and the belts on either side of it

(d)

can't say

Answer:

Option (b)

19.

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

Answer:

Option (c)

20.

The ratio of the driving tensions for V-belts is _____________ times that of flat belts.

(a)

sin β

(b)

cos β

(c)

cosec β

(d)

sec β

Answer:

Option (c)

Showing 11 to 20 out of 47 Questions