One hertz (Hz) is equivalent to:
A) One thousand cycles per second. B) One cycle per second.
C) One cycle per minute. D) One thousand cycles per minute.
[Ques. 2] In a basic electric circuit with a steady potential, when resistance decreases:
A) Current increases.
B) Current remains the same.
C) Current decreases.
D) The resistance has no effect on the current in an electric circuit.
[Ques. 3] A technician determines that an air-conditioning system holding 50 lb of refrigerant lost one lb of refrigerant in a month. Does the EPA require the leak to be repaired?
A) Yes, because leaking 1 lb in a month is a leak rate of 24 percent per year
B) No, because systems that only hold 50 lb are exempt
C) No, because 1 lb is not 35 percent of 50
D) No, because 1 lb is not 15 percent of 50
[Ques. 4] In a basic electric circuit with a steady potential, when resistance increases:
A) Current remains the same.
B) Current decreases.
C) Current increases.
D) The resistance has no effect on the current in an electric circuit.
[Ques. 5] Why does the EPA NOT require that all leaks be fixed?
A) Charges under 50 lb are exempt. B) Type III systems are exempt.
C) Publicly owned systems are exempt. D) Residential units are always exempt.
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