How are trigger rates established?

How are trigger rates established?
 
  A) By total monthly loss B) By speed of loss
  C) By total annual loss D) By amount of coolant capacity

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[Ques. 2] An electrical circuit is composed of a power source, a path for current to flow, and:
 
  A) Load. B) Element.
  C) Switch. D) A means of regulating power.

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[Ques. 3] How is ultrasound used in leak detection?
 
  A) It amplifies the sound of a leakage. B) It makes exiting gases visible.
  C) It causes the formation of bubbles near a leak. D) It allows for a visual close-up of the system.

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[Ques. 4] In a basic electric circuit with a fixed resistance, when voltage increases:
 
  A) Current increases.
  B) Current remains the same.
  C) Current decreases.
  D) The voltage has no effect on the current in an electric circuit.

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[Ques. 5] The number of cyclic wave forms present at one time in an AC circuit is called:
 
  A) Hertz. B) Phase. C) Frequency. D) Ohms.