Which of the following devices can detect when a technician is receiving an electrical shock and turn off the power?
A) A circuit breaker
B) A GFCI
C) A fuse
D) Fuses, circuit breakers, and GFCI devices can all detect when a person is receiving a shock.
B
You might also like to view...
Answer the following statement(s) true (T) or false (F)
1. There is one basic function of synchronous motor control in starting.
2. The principal difference between synchronous motor control and induction motor control is in the control of the field.
3. In the accompanying figure, when the stator is energized, the rotor circuit must be open at all times.
4. In the accompanying figure, the normally open contacts M in the F coil circuit prevent the DC field from being
energized before the motor is started.
5. In the accompanying figure, the ammeter and rheostat control the excitation current.
Which of the following is true when joining PVC conduit?
a. The cementing and joining operation should not exceed 20 seconds. b. Deburring is not necessary with PVC. c. PVC must be cut using a special PVC saw. d. When joining PVC, avoid rotating the conduit after it has been inserted into the fitting.
Answer the following statements true (T) or false (F)
1. The figures below present the marginal cost of abatement for two firms. As long as the total
abatement being pursued is less than 1 unit, it is cost effective for Firm 2 to not abate any.
2. The capitalized value of a constant stream of $20 per year given an interest rate of 4% per year is $800.
3. The prior appropriation doctrine is a system in which individuals have rights to specific
quantities of water and these right can be sold to others.
4. If groundwater resources are regulated by the "rule of capture," whoever can pump up the water can take as much as they desire. This approach leads to an economically inefficient use of
groundwater.
As the length of a wire is increased, ________
A) The resistance of the wire remains the same B) The resistance of the wire increases C) The resistance of the wire decreases D) The voltage of the wire decreases