If an alternator had a pulley with a 3:1 ratio to the crankshaft and the e engine was turning 1800 RPM then the alternator would be turning at:
a. 300 RPM
b. 600 RPM
c. 1800 RPM
d. 5400 RPM
D
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Explain what preheating is and why it would be used.
What will be an ideal response?
For the motor in Problem 7.1 and for a fan-type load, calculate the following, assuming that the supply frequency is increased by 20%:
a. Motor speed b. Starting torque c. Starting current d. Motor efficiency (ignore rotational and core losses)
What does turning into and out of a driveway test?
A) The suspension B) The engine C) The transmission D) The body for rust
Why must you cover the coils when testing the heat pump in warm weather?
A) To prevent the heat pump from overloading the compressor B) To increase the amount of heat delivered to the system C) To reduce the amount of heat lost from the system D) To trigger the temperature valve to release excess pressure