Ultrasonic leak detectors detect refrigerant leaks by:
A) Seeing the refrigerant by sensing the effect that the leaking refrigerant gas has on sonar.
B) Seeing the change in infrared radiation around the area of the leak.
C) Seeing the change in ultra-violet radiation around the area of the leak.
D) Hearing the high frequency of the escaping gas.
D
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A vertical move downward on the psychrometric chart corresponds to which of the following? Select all that apply.
A) A decrease in specific volume. B) An increase in enthalpy. C) A decrease in density. D) A decrease in humidity ratio. E) A decrease in relative humidity. F) A decrease in dewpoint.
A(n) _____ SAE is for students who are placed with an employer in a production unit
a. protective c. exploratory b. placement d. entrepreneurship
A(n) ____________________, used to track rotor movement, uses the technique of a rotating magnet that induces a sine wave into the receiver.
What will be an ideal response?
On a residential construction site, what is commonly called a "saw pole"?
A) Service utility pole B) Local utility hookup C) Permanent power source D) Temporary power pole