What two pieces of information are necessary to measure the TEV superheat?
A) The evaporator inlet and outlet temperatures
B) The liquid line and suction line temperatures
C) The valve body temperature and the bulb temperature
D) The suction line temperature and pressure
D
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Answer the following statement(s) true (T) or false (F)
1. With variable torque loads, the torque varies as the square of the speed. 2. The electronic shear pin reacts to the amount—and rate —of current increase to the motor. 3. The half-wave rectifier circuit requires two diodes and the use of a center-tapped secondary AC transformer. 4. In a three-phase rectifier system, the DC level remains high and the ripple percentage is very low; therefore, the DC supply needs very little filtering. 5. The armature power is typically controlled by an SCR that is turned on at different points in the waveform to adjust the voltage to the motor armature to control the speed.
A Ravigneaux gear set uses ________.
A) One ring gear B) Two sun gears C) Two sets of planet pinion gears D) All of these
____ is the period during which the electrode force is applied and the welding current is shut off.
A. Off period B. Squeeze time C. Weld time D. Hold time
To convert from the Celsius temperature scale to the Fahrenheit temperature scale use the formula °C = 5/9(°F - 32).
Answer the following statement true (T) or false (F)