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| Q. |
Which of the following is correct formula for braking torque in plugging? |
| A. | n (ka2/rb) |
| B. | n2 (ka2/rb) |
| C. | n-1 (ka2/rb) |
| D. | (ka2/rb) |
| Answer» A. n (ka2/rb) | |
| Explanation: braking torque is equal to braking power divided by speed of the motor. t= [(nka )2/rb]/n. as, braking power is equal to ea2/rb/n. by solving for the braking torque from the above equation, we get n (ka2/rb). | |
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