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The armature of a shunt wound motor can ...

The armature of a shunt wound motor can with stand current up to 8 A before it overheats and it damaged. If the armature resistance is `0.5 Omega`,minimum back emf that must be motor is connected to a 120 V line is

A

120 V

B

116 V

C

124 V

D

4 V

Text Solution

Verified by Experts

The correct Answer is:
B
From `R=(E-V)/(i)`
`0.5=(120-V)/(8)=116V`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTROMAGNETIC INDUCTION-Example 1
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