Electrical Engineering : Industrial Drives QUESTIONS AND ANSWERS :: part2 : 16 to 20
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.For crane travel which of the following motors is normally used ? |
| Synchronous motor |
| D.C. differentially compound motor |
| Ward-Leonard controlled D.C. shunt motor |
| AC. slip ring motor |
17.The travelling speed of cranes varies from |
| 20 to 30 m/s |
| 10 to 15 m/s |
| 5 to 10 m/s |
| 1 to 2.5 m/s |
18.By the use of which of the followingm D.C. can be obtained from AC. ? |
| Silicon diodes |
| Mercury arc rectifier |
| Motor generator set |
| Any of the above |
19.In which of the following applications the load on motor changes in cyclic order ? |
| Electric shovels |
| Cranes |
| Rolling mills |
| All of the above |
20.Which of the following motors is preferred when quick speed reversal is the main consideration ? |
| Squirrel cage induction motor |
| Wound rotor induction motor |
| Synchronous motor |
| D.C. motor |
More Industrial Drives QUESTIONS AND ANSWERS available in next pages
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