Starters are used with D.C. motors because Options: A . &nbspThese motors have high starting torque B . &nbspThese motors are not self-starting C . &nbspBack e.m.f. of these motors is zero initially D . &nbspTo restrict armature current as there is no back e.m.f. while starting

Starters are used with D.C. motors because

Question

Starters are used with D.C. motors because

Options:

A . These motors have high starting torque

B . These motors are not self-starting

C . Back e.m.f. of these motors is zero initially

D . To restrict armature current as there is no back e.m.f. while starting

Answer: Option D

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Question 1. If I2 be the armature current, then speed of a D.C. shunt motor is....

Question 2. In case of D.C. shunt motors the speed is dependent on back e.m.f. only because....

Question 3. A direct on line starter is used: for starting motors....

Question 4. The ratio of starting torque to full-load torque is least in case of....

Question 5. For starting a D.C. motor a starter is required because....

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Question 8. Sparking at the commutator of a D.C. motor may result in....

Question 9. For which of the following applications a D.C. motor is preferred over an A.C. motor?....

Question 10. Which D.C. motor has got maximum self relieving property?....

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