Why are single-element fuses particularly suited for the protection of circuit breakers with low interrupting ratings?
A) They have a low speed of response to short circuit currents.
B) They can be used in circuits other than motor branch circuits and feeders, such as lighting circuits.
C) They have a high speed of response to overcurrents.
D) They can be applied in circuits subject to temporary motor overload.
C
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Technician A says premature bearing failure may be caused by misalignment of the bearing and bearing cup. Technician B says bearing brinelling occurs when driving the vehicle at high speeds. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Modern diesel engines have been mandated to have exhaust emissions that are nearly free of particulates.
Answer the following statement true (T) or false (F)
Artificial media components have the advantage of being _____
a. Heavy c. dark b. Lightweight d. water resistant
Combustion with a perfect stoichiometric mix of oil and air produces a vent gas CO2 percentage of
A) 15.5% B) 12.5% C) 9.5% D) 10.5%