Summarize the first and second laws of thermodynamics
What will be an ideal response?
1st law – energy cannot be created or destroyed.
2nd law – heat travels from high temperature to low temperature.
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It’s estimated that the average home has about ____ electric motors.
a. 25 b. 50 c. 75 d. 100
The phase value of the injected voltage as seen from the stator side is adjusted to ' Vi = 5 V and is in phase with the terminal voltage. The speed of the machine at this condition is 1300 rpm. Ignore the losses and compute the developed torque.
An induction motor of Type 3 wind turbine is six-pole, 60 Hz, three-phase. The
terminal voltage of the machine is 690 V, and its effective turns ratio is 10:1. The
parameters of the machine are:
The outer scale on most gauges reads:
A) Pressure. B) Weight. C) Saturation temperature. D) Compound temperature.
Which of the following is NOT required in order for an engine computer to enter closed loop operation?
A. The oxygen sensor must be up to operating temperature. B. The engine's coolant temperature must be at or above a specified temperature. C. The vehicle must be at or above a designated speed as measured by the vehicle speed sensor. D. A specified time period must have passed since the engine was started.