A protective casing that requires no finishing is known as a(n) _____.
a. control joint
b. L-bead
c. J-bead
d. expansion joint
Answer: B
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By how much does a HEUI amplifier piston exceed the sectional area of the pumping plunger by?
A. one time B. four times C. five times D. seven times
Selling raw milk is illegal in all 50 states
Indicate whether the statement is true or false
Inverse-time means
A. the element of time is not an issue so far as operation of the overcurrent device is concerned. B. the more current that flows in the circuit, the less time it will take for the overcurrent device to operate. C. a time delay is specifically introduced into the overcurrent device so it will operate slower. E. circuit breakers open the ground fault faster than fuses.
All of the following statements about the hand valves in an air conditioning gauge manifold are true, EXCEPT:
A. When both hand valves are closed, both the low- and high-side hose ports are connected only to the low- and high-side gauges. B. If either hand valve is cracked open and the center hose is opened, refrigerant pressure will equalize across the system. C. The gauges show respective system pressures when the manifold hand valves are closed. D. If both manifold hand valves are cracked, the pressures will equalize in the manifold and neither of the gauges will accurately indicate system pressure.