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The ratio of tension on the tight side to that on the slack...

Q.  
The ratio of tension on the tight side to that on the slack side in a flat belt drive is


Answer & Explanation

The ratio is of tensions on tight side (T1) and slack side (T2) is expressed as
T1/T2 = eµθ
Where,
µ= coefficient of friction
θ= lap angle

Thus correct option is: B.

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Q.  
Given that T1 and T2 are the tensions on the tight and slack sides of the belt respectively, the initial tension of the belt, taking into account centrifugal tension Tc, is equal to

A. (t1 +t2 +tc)/3

B. (t1 +t2 + 2tc)/2

C. (t1 +t2 + 3tc)/3

D. (t1 −t2 + 3tc) /2


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Q.  
The difference between tensions on the tight and slack sides of a belt drive is 3000 N. If the belt speed is 15 m/s, the transmitted power in kW is

A. 45

B. 22.5

C. 90

D. 100


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Q.  
A 50 kW motor using six V-belts is used in a pump mill. If one of the belts break after a month of continuous running then

A. The broken belt is to be replaced by a similar belt

B. All the belts are to be replaced

C. The broken belt and two adjacent belts are to be replaced

D. The broken belt and one adjacent belt are to be replaced


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Q.  
In multiple V-belt drives, 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 & Explanation
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