Q46. When the operating temperature of a machine exceeds its insulation temperature rating: (a) the machine efficiency improves (b) the machine speeds up (c) the life of the machine is reduced (d) the machine slows down (e) the insulation burns Q47. The cooling fans of a motor dissipate heat through: (a) Conduction (b) Natural Convection (c) Radiation (d) Forced Convection (e) All of the above Q48. Find the energy absorbed by a copper winding when the winding temperature increases from 298 K to 353 K. The mass of the winding is 150 kg and the specific heat capacity of copper is 385 J kg ¹°C ¹. (a) 3,002,000 J (b) 3,002,000 J (c) 3,176,250 J (d) 2,589,620 J (e) 2 664 520 I

Q46. When the operating temperature of a machine exceeds its insulation temperature rating: (a) the machine efficiency improves (b) the machine speeds up (c) the life of the machine is reduced (d) the machine slows down (e) the insulation burns Q47. The cooling fans of a motor dissipate heat through: (a) Conduction (b) Natural Convection (c) Radiation (d) Forced Convection (e) All of the above Q48. Find the energy absorbed by a copper winding when the winding temperature increases from 298 K to 353 K. The mass of the winding is 150 kg and the specific heat capacity of copper is 385 J kg ¹°C ¹. (a) 3,002,000 J (b) 3,002,000 J (c) 3,176,250 J (d) 2,589,620 J (e) 2 664 520 I

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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