In order to reduce duct leakage, ducts should be sealed with _____
a. mastic
b. duct tape
c. electrical tape
d. paint
a
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A minimum of _____ foot candles of light is required by Grade A regulations in all work areas during
milking.
a. 10 c. 14 b. 12 d. 16
Two-temperature operation of a refrigeration system is necessary when ____.
A. the compressor must be protected from overloading B. more than one evaporator is used with a compressor C. the coil in the evaporator is excessively long D. a multiple-circuit distributor is used
After the water pump was replaced and the cooling system refilled with coolant, the heater stopped providing warm air. Which of these is the most likely cause?
A) The wrong concentration of antifreeze was installed B) An air pocket is trapped in the heater core C) A defective heater control valve D) A slipping water pump drive belt
Applying an ac voltage to an electromagnet's coil will produce a ________
A) north magnetic field B) changing magnetic field C) steady magnet field D) south magnetic field