Which of the following devices works on an opposite principle to an electric motor?
A. diode
B. generator
C. transformer
D. capacitor
Answer: B
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Describe gearless traction elevators.
What will be an ideal response?
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How much of a correction factor is needed if the ambient temperature is 40°C?
a. 0.28 b. 0.57 c. 0.77 d. 0.82
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What are the two capacities that a digital scroll compressor can operate at?
What will be an ideal response?
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An evaporator pressure regulator is typically _____
A) controlled by an On-Off switch B) controlled by a programmable controller C) a self-contained device D) required on all domestic refrigeration systems
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