The automatic switchover between compression heat and fossil-fuel heat in a dual-fuel heat pump application is done by a(n) _____.
a. reversing valve
b. room thermostat
c. furnace control board
d. outdoor thermostat
d. outdoor thermostat
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Technician A says that when testing power steering pump pressure, the pressure gauge should be connected in the power steering return hose. Technician B says if the power steering pump pressure is less than specified, the pressure relief valve may be sticking. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
If both S and R inputs of a NOR-based RS flip-flop are set to logic-1, the flip-flop is said to be in _____
A) set mode B) memory mode C) illegal mode D) reset mode
There are two types of floor nailers used for installing hardwood and softwood flooring. The advantage a pneumatic floor nailer has over a manual floor nailer is ________
A) The pneumatic floor nailer requires compressed air to operate B) The pneumatic floor nailer requires only a light blow to the plunger to drive in nail C) The pneumatic floor nailer can overdrive nails into the flooring D) The pneumatic floor nailer has an adapter plate to maintain a proper angle
In plasma arc cutting, plasma is created by _____
a. combining acetylene with acetone b. exposing cutting gas to radioactive material c. passing fuel gases through a large orifice inside the torch d. superheating gas in an electric arc