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.
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
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