Electrical Engineering : Electrical Machine Design QUESTIONS AND ANSWERS :: part1 : 11 to 15
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
11.The length cf air gap to be provided in ______ is primarily determined by power factor consideration. |
| d.c. series motor . |
| d.c. shunt motor |
| induction motor |
| synchronous motor |
12.The density of hydrogen is _____ times the density of air. |
| 0.07 |
| 1.5 |
| 2.5 |
| 3.5 |
13.Which ofthe following methods is used for air cooling of turbo-alternators ? |
| One sided axial ventilation |
| Two sided axial ventilation |
| Multiple inlet system |
| All ofthe above |
14.The design of mechanical parts is particularly important in case of _____ speed machines. |
| low |
| medium |
| high |
| any of the above |
15.If an insulating material is operated beyond the maximum allowable temperature, its life is |
| drastically increased |
| drastically reduced |
| unaffected |
| none of the above |
More Electrical Machine Design QUESTIONS AND ANSWERS available in next pages
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