11. The load cycle for a motor driving a power press will be A. Variable load B. Continuous C. Continuous but periodical D. Intermittent and variable load Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
12. Which of the following motors is used for elevators? A. Induction motor B. Synchronous motor C. Capacitor start single phase motor D. Any of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
13. Ward-Leonard controlled D.C. drives are generally used for _________ excavators. A. Light duty B. Medium duty C. Heavy duty D. All of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
14. A reluctance motor A. Is provided with slip rings B. Requires starting gear C. Has high cost D. Is compact Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
15. Which of the following motors are preferred for overhead traveling cranes? A. Slow speed motors B. Continuous duty motors C. Short time rated motors D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
16. In jaw crushers a motor has to often start against ________ load. A. Heavy B. Medium C. Normal D. Low Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
17. For which of the following applications D.C. motors are still preferred? A. High efficiency operation B. Reversibility C. Variable speed drive D. High starting torque Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
18. Is not a part of ball bearing? A. Inner race B. Outer race C. Cage D. Bush Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
19. The characteristics of drive for crane hoisting and lowering are which of the following? A. Precise control B. Smooth movement C. Fast speed control D. All of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
20. The starting torque of a D.C. motor is independent of which of the following? A. Flux B. Armature current C. Flux and armature current D. Speed Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
