Most of today?s standard refrigerant gauge manifolds have a high -pressure gauge that goes up to _____
A) 500 psig
B) 650 psig
C) 800 psig
D) 900 psig
Answer: C
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Answer the following statement(s) true (T) or false (F)
1. The operation of a float switch is controlled by the forward or backward movement of a float placed in a water tank. 2. An electrode, or stainless steel probe system, conducts a circuit in the liquid instead of using floats. 3. The mercury bulb switch appears to be a rubber bulb connected to a conductor. 4. In a mercury bulb-type float switch, when the liquid level is below the position of the bulb, the bulb is in a horizontal position. 5. One mercury bulb float switch is used to control a pump motor.
A bee may visit as many as 50 to 100 flowers until it has enough nectar to return to the hive
Indicate whether the statement is true or false
The RMS value of a sine wave means ________
A) the root mean square value B) the same as IP × R C) the same as IPP × R D) the heating effect of an ac generator of the same voltage
Technician A says that when welding steel, a welder needs to have respiratory protection. Technician B says that safety data sheets have the local fire marshal’s phone number on them. Who is correct?
A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B