1. Automatic is self-acting, functioning by its own mechanism when actuated by some
detached influence, such as ________.

(a) a change in current strength (b) temperature (c) mechanical configuration (d) either A, B, or C
 

2. A 300 W, 130 V incandescent lamp draws _____________ A.

3. An enclosure designed either for surface or flush mounting and provided with a frame, in which a swinging door may be hung is a ________.

(a) cabinet (b) switchboard (c) panelboard (d) cutout box

4. A circuit has 1.5 A of current through a 40 ohm resistor. The current is _______ A if the resistance is increased to 50 ohms.

(a) 1.5 (b) 2 (c) 1.2 (d) 2.6
 

5. Copper forms a minimum of ________% of the cross-sectional area of a solid copper-clad aluminum wire.

(a) 80 (b) 125 (c) 10 (d) 12.5  

6. Three 8 ohm resistors are connected in series. The total resistance is __________ohms.

(a) 24 (b) 2.66 (c) 8 (d) neither A, B, nor C 

7. Ampacity is expressed in ___________.

(a) volts x amps (b) amperes (c) volts x watts (d) mhos  

8. Three 8 ohm resistors are connected in parallel. The total resistance is ________ohms.

(a) 2.66 (b) 24 (c) 8 (d) neither A, B, nor C
 

9. Intermittent duty is a mode of service that demands operation for alternate intervals of _________.

(a) load and no load (b) load and rest (c) load, no load, and rest (d) either A, B, or C  

(a) 15 (b) 3.33 (c) 50 (d) neither A, B, nor C 

11. Accessible (as pertains to equipment) means _________.

(a) admitting close approach (b) not guarded by locked doors (c)either A or B (d) neither A, B, nor C
 

12. A 10 ohm heater draws 4 A from a power supply. The power supply is _____________V.

(a) 120 (b) .4 (c) 40 (d) neither A, B, nor C
 

13. _________ is the most common liquid used in transformers.

(a) PCB (b) Leactill (c) Askarel (d) Tetraetill
 

14. The unit for the measurement of work is the ___________.

(a) Coulomb (b) Farad (c) foot-pound (d) watt-hour
 

15. The point of connection between the facilities of the serving utility and the premises wiring is the __________.

(a) transformer tie (b) service tie (c) system connection tie (d) service point
 

16. A conducting material has a certain resistance at 30°C (_______°F).

(a) 30 (b) 68 (c) 86 (d) 72
 

17. A load in which the peak current is assumed to continue for three hours or more is a _________ load.

(a) peak (b) continuous (c) maximum (d) nominal
 

18. The operating temperature of an insulation should not exceed 104 °F (__________°C).

(a) 40 (b) 60 (c) 72 (d) neither A, B, nor C
 

19. An LB is a ____________.

(a) conduit body (b) fitting (c) device (d) service elbow
 

20. Current is defined as the flow of ___________.

(a) protons (b) neutrons (c) ohms (d) electrons
 

21. A __________ is a device which serves to govern, in some predetermined manner, the electric power delivered to the machinery to which it is attached.

(a) switch (b) relay (c) contractor (d) controller
 

22. The maximum recommended line loss for a 40 A, 240 V, 1Ø branch circuit is _________V.

(a) 12 (b) 7.2 (c) 3.6 (d) neither A, B, nor C
 

23. A space in which an elevator or dumbwaiter operates is a _________.

(a) shaftway (b) hatchway (c) well hole (d) either A, B, or C
 

24. A 115 V, 1Ø circuit has an 8 V line loss. The voltage drop is _________%.

(a) 14.38 (b) 6.96 (c) 2.64 (d) neither A, B, nor C
 

25. __________ lighting is an arrangement of electrical lighting designed to call attention to certain items, such as the shape of a building.

(a) Festoon (b) Landscape (c) Outline (d) Flood
 

26. A transformer has a 300 W, 120 V primary and a 295 W, 12 V secondary. The transformer is ___________% efficient.

(a) 95 (b) 98 (c) 100 (d) 80
 

27. Conduit installed underground is considered ____________.

(a) in a wet location (b) protected (c) in a damp location (d) covered
 

28. With a source voltage of 120 V and a load of 6500 W, the voltage across the load reads 115 V. The power consumed by the conductors is _________W.

(a) 283 (b) 300 (c) 150 (d) 75
 

29. A(n) _______ is a separately derived system.

(a) LV fire alarm (b) transformer (c) smoke detector (d) elevator motor
30. The Joule is the measurement of ___________.

(a) voltage (b) energy (c) electrons (d) resistance