What function is performed by a 74194 Universal Shift Register if the select inputs are S1 = 1 and S0 = 1?
A) shift right B) shift left C) parallel load D) hold
C
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As the percentage of antifreeze in the coolant? increases, ____________.
A) The boiling point decreases B) The freeze point decreases (up to a point) C) The heat transfer increases D) All of the above occurs
The three basic methods of sensing ground faults are ground-return, residual, and _____.
a. inductive heating b. repeating c. zero sequence d. saturation
If records show that thermodynamic traps on one particular installation suffer repeatedly from rapid wear, the trap may be _____.
a. dirty b. the wrong type c. overpressurizing d. oversized
Technicians should be cautious when taking an oil sample from a semi-hermetic compressor because:
A) The oil is highly flammable. B) The oil is highly toxic. C) The oil sample must be done with the compressor running. D) The compressor crankcase is under pressure.