TAP Services(865) 919-6674

TAP Services

26410-11 Motor Operation and Maintenance

1. In general, how much endplay should ball-bearing motors have?

Question 1 of 15

2. The recommended minimum polarization index for an AC motor is ________.

Question 2 of 15

3. Which of the following is used to check the rotating speeds of motors?

Question 3 of 15

4. NEMA's usual service conditions include a voltage variation of not more than what percentage of the nameplate voltage?

Question 4 of 15

5. The frequency of motor lubrication depends on the type of bearing, motor application, and ________.

Question 5 of 15

6. NEMA's usual service conditions include a frequency variation of not more than what percentage of the nameplate frequency?

Question 6 of 15

7. Which of the following is the best instrument for testing for a grounded coil?

Question 7 of 15

8. When determining the polarization index on a 460V motor, which of the following test voltages should be applied between the winding and ground?

Question 8 of 15

9. NEMA's usual service conditions include an altitude limit of ________.

Question 9 of 15

10. Absorption current consists of polarization current and ________.

Question 10 of 15

11. The polarization index is commonly used for motors over ________.

Question 11 of 15

12. The frequency and thoroughness of motor maintenance and testing depends upon the number of hours and days the motor operates, the importance of the motor, and the ________.

Question 12 of 15

13. Which of the following may be used to detect unusual bearing noise during rundown when the motor is powered down?

Question 13 of 15

14. Which of the following describes a finned air-over motor that powers and is cooled by the slipstream from a large fan?

Question 14 of 15

15. The useful life of a squirrel cage induction motor depends largely upon the condition of its ________.

Question 15 of 15


 

Our Clients
Mailing List

Sign up for our mailing list today!

FOLLOW US ON SOCIAL MEDIA
 
 
 
 
3d person on book
Quick Nav
TAP Services
(865) 919-6674 phone Contact Us

This site is proudly hosted and designed by Globotech Solutions. All content Copyright © 2025, TAP Services.