If the technician encounters a circuit breaker that is tripping repeatedly, she should first:
A) Keep resetting the breaker until something fails.
B) Find the electrical fault that is causing the breaker to trip.
C) Replace the breaker with one with a higher rating.
D) Bypass the breaker.
B
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In a CAN network, if a module fails to "check in" with the other modules:
A. The module will be shut down B. A trouble code is set C. The vehicle will not start. D. None of the above
What effect on the building pressure does a heat recovery ventilator have?
A) It decreases building pressure. B) It increases building pressure. C) No effect—it is a balanced system. D) It increases building pressure on one side and decreases it on the other side.
The power wire for a piece of air-conditioning equipment should be sized using:
A) The locked rotor current of all the equipment motors added together. B) The sum of the compressor RLA and the FLA of all fan motors. C) The maximum overcurrent rating listed on the equipment data plate. D) The minimum circuit ampacity listed on the equipment data plate.
What results from increasing rocker ratio?
A. Decrease in output travel at the pallet end of the rocker arm. B. Decrease in mechanical advantage. C. Increase the amount of pushrod travel. D. Increase the output travel at the pallet end of the rocker arm.