GW202 Lesson 6 Exam

Where a fuse is not otherwise marked, the maximum standard interrupting rating for a fuse is ________. Select one: a. 10,000 A b. 500 A c. 5000 A d. 6000 A

a. 10,000 A

A right triangle has one angle that is 60°. The side adjacent to the 60° angle has a length of 7 in. How long is the opposite side? Select one: a. 12.12 in. b. 6.06 in. c. 4.04 in. d. 3.5 in.

a. 12.12 in.

Ampacity of feeder taps not over 25 ft. long shall not be less than 1/3 of the rating of the overcurrent protection device protecting the ___ conductors. Select one: a. feeder b. secondary c. utilization d. electrode

a. feeder

In general, the next ___ standard size overcurrent device of 800 amperes or less is used where the overcurrent device does not correspond to a standard size. Select one: a. higher b. lower c. limited d. lowest

a. higher

A(n) ___ is any current in excess of that for which the conductor or equipment is rated. Select one: a. overcurrent b. voltage drop c. undercurrent d. base current

a. overcurrent

A right triangle has a hypotenuse of 87 and one side that is 44. How long is the other side? Select one: a. 43 b. 75.05 c. 131 d. 97.49

b. 75.05

A(n) ___ is a circuit breaker with no delay between the fault and the tripping action. Select one: a. Inverse Time circuit breaker b. Instantaneous Trip circuit breaker c. Nonadjustable circuit breaker d. Adjustable circuit breaker

b. Instantaneous Trip circuit breaker

The Pythagorean theorem is ________. Select one: a. c = a 2+ b 2 b. c 2 = a 2+ b 2 c. 2c = 2a + 2b d. c 2 = 2a + 2b

b. c 2 = a 2 + b 2

In general, the grounded conductor (neutral) is colored white or ___. Select one: a. green b. gray c. green with yellow stripes d. brown (480 volts only)

b. gray

In general, fuses and circuit breakers shall not be connected in ___. Select one: a. series b. parallel c. an approved panel d. a residential panel

b. parallel

The function that is equal to the opposite divided by the hypotenuse is the _____. Select one: a. cotangent b. sine c. cosine d. tangent

b. sine

Conductors exposed to corrosive conditions shall have an insulation that is ___ for the application. Select one: a. marked THHN b. suitable c. readily distinguishable d. available

b. suitable

An open delta connection is made using _____ single-phase transformers. Select one: a. one b. two c. three d. four

b. two

A wye-connected secondary has a phase to ground voltage of 277.14 V. What is the phase to phase voltage? Select one: a. 160 V b. 277.14 V c. 480 V d. 554.28 V

c. 480 V

The three most common temperature ratings of conductors are 60°C (140°F), 75°C (167°F), and ___°C (194°F). Select one: a. 80 b. 85 c. 90 d. 100

c. 90

A right angle is an angle of ________. Select one: a. less than 45° b. 45° c. 90° d. greater than 90°

c. 90°

Equipment grounding conductors shall have an outer finish that is _______ in color. Select one: a. gray b. white c. green d. yellow

c. green

Overcurrent devices are permitted to be installed in _____________. Select one: a. in clothes closets b. in bathrooms c. in garages d. none of the above

c. in garages

No conductor shall be installed in such a manner that the operating temperature of its ___ is exceeded. Select one: a. ampacity b. current c. insulation d. conductive material

c. insulation

A wye-delta transformer has a turns ratio of 2:1. It has a secondary phase to phase voltage of 480 V. The secondary is connected to a wye-connected three-phase resistive load of 50 Ohms in each phase. How much current flow is there in each load resistor? Select one: a. 9.6 A b. 4.8 A c. 2.77 A d. 5.54 A

d. 5.54 A

Paralleled conductors shall all be the same _______. Select one: a. length b. size c. terminations d. all of the above

d. all of the above

THHN conductors are permitted to be installed in _____ locations. Select one: a. dry b. damp c. wet d. both a and b

d. both a and b

In an open delta with single-phase loads, the high leg must be identified by ____. Select one: a. using orange wire b. tagging with orange tape c. both a and b above d. either a or b above

d. either a or b above

When conductors are run in parallel in separate raceways, the raceways shall have the same ___ characteristics. Select one: a. mental b. pneumatic c. personal d. electrical

d. electrical

Edison-base fuses are for ___ in existing locations only. Select one: a. upgrades b. GCFI protection c. arcing d. replacements

d. replacements