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An electric motor operates with an effic...

An electric motor operates with an efficiency of `90%`. A pump operated by the motor has an efficiency of `80%`. The overall efficiency of the system is

A

`85%`

B

`100%`

C

`72%`

D

`60%`

Text Solution

Verified by Experts

The correct Answer is:
C

`eta = eta_(1) xx eta_(2)`
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