Where are salamanders used?
A) They are used to preheat the return air in air source heat pumps.
B) They are most often used in bedrooms to supplement central heating systems on unusually cold nights.
C) They are often used during building construction to supply temporary heat.
D) They are specifically designed to heat aquatic biospheres containing amphibians.
[Ques. 2] When searching for a break in a circuit by hopscotching, the technician checks:
A) The wattage of each switch in the circuit. B) The resistance of each switch in the circuit.
C) The voltage at each switch in the circuit. D) The amp draw at each switch in the circuit.
[Ques. 3] Before checking the switches in the circuit to a nonfunctioning load, the technician should first check:
A) Line voltage, control voltage, and voltage to the nonfunctional component.
B) The resistance of the nonfunctioning device.
C) The current draw of the nonfunctioning device.
D) The resistance of all the devices in the same circuit with the nonfunctional device.
[Ques. 4] Which of the following statements regarding the mechanical-draft cooling tower is correct?
A) The mechanical-draft cooling tower uses a fan to move air through the tower.
B) Mechanical-draft cooling towers are used only for small-scale installation requiring a few gallons of water per minute.
C) The primary means of drawing air though the mechanical-draft cooling tower is the density difference between the air inside and outside the tower.
D) There is only one design for a mechanical-draft cooling towerthe hyperbolic design.
[Ques. 5] During the initial startup of a geothermal water-source heat pump, when should the water flow be checked and adjusted?
A) After operating the unit for at least 15 minutes
B) After making sure the refrigerant charge and airflow are correct
C) First, before operating the system
D) After checking the system refrigerant pressures and amp draw
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