If a technician needs to check the refrigerant pressures on a system with a small charge:
A) A short refrigeration gauge should be used.
B) Only the high side of the gauge manifold set should be connected.
C) A standard gauge manifold set should be connected to both sides of the system.
D) Only the low side of the gauge manifold set should be connected.
A
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The first response to a fire is to _____.
a. lower the load b. secure the crane c. cease crane operation d. extinguish the fire
With the system operating, a technician gets a reading of 20 V between the L1 and T1 terminals at the contacts of the contactor. This tells the technician that:
A) The contactor is operating correctly. B) The compressor is defective. C) The contacts are defective because they have a measurable voltage drop. D) The transformer is defective because the voltage should be 24 V.
If a 50 mH inductor is in series with a 50 k? resistor across a 50 VDC source, what is the maximum current that will flow in the circuit?
A) 1 ?A B) 1 mA C) 10 mA D) 100 ?A
Which one of the following is least like the other four?
A. closed shop B. lockout C. yellow dog contract D. blacklist E. company town