RME Technical Subjects Test 3

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#1. A (an) ____ changes AC to DC.

a.) Battery

b.) Capacitor

c.) Alternator

d.) Rectifier

#2. A stranded wire is given the same size designation as a solid wire if it has the same ____.

a.) Weight per foot

b.) Overall diameter

c.) Strength

d.) Cross-sectional area

#3. Fractional horsepower universal motors have brushes usually made of ______.

a.) Copper strands

b.) Mica

c.) Carbon

d.) Thin wire rings

#4. A set of lights switched from three different places can be controlled by _____ switch (es).

a.) Two 3-way and one 4-way

b.) Two 3way and one 2way

c.) 2 single-pole

d.) Four pole

#5. ______ is the ability of a material to permit the flow of electrons.

a.) Voltage

b.) Current

c.) Resistance

d.) Conductance

#6. The frame of a motor is usually positively grounded to ______.

a.) Protect against shock

b.) Remove the static currents

c.) Provide 115 volts

d.) Protect from lightning

#7. All wiring must be installed so that when completed _____.

a.) It meets the current-carrying requirements of the load

b.) It is free of shorts and unintentional grounds

c.) It is acceptable to Code compliance authorities

d.) It will withstand a hi-pot test

#8. Pigtails are used on brushes to _____.

a.) Compensate for wear

b.) Supply the proper brush tension

c.) Make a good electrical connection

d.) Hold the brush in the holder

#9. As compared with solid wire, stranded wire of the same gauge size is ____.

a.) Better for higher voltages

b.) Given a higher ampacity

c.) Easier to skin

d.) Larger in total diameter

#10. Mandatory rules of the Code are identified by the use of the word _____.

a.) Should

b.) Shall

c.) Must

d.) Could

#11. Batteries supply ___ current.

a.) Positive

b.) Negative

c.) Direct

d.) Alternating

#12. Alternating currents may be increased or decreased by means of a _____.

a.) Motor

b.) Transformer

c.) Dynamo

d.) Megger

#13. The resistance of a copper wire to the flow of electricity _____.

a.) Decreases as the length of the wire increases

b.) Decreases as the diameter of the wire decreases

c.) Increases as the diameter of the wire increases

d.) Increases as the length of the wire increases

#14. Which has the highest electrical resistance?

a.) Brass

b.) Iron

c.) Water

d.) Paper

#15. A “Mil” measures ________.

a.) 1/8”

b.) 0.000001”

c.) 0.001”

d.)0.00010”

#16. Of the following, the best indication of the condition of the charge of a lead acid battery is the _____.

a.) Temperature of the electrolyte

b.) Level of the electrolyte

c.) Open circuit cell voltage

d.) Specific gravity

#17. An advantage that rubber insulation has is that it _______.

a.) Is not damaged by oil

b.) Is good for extreme temperatures

c.) Does not absorb much moisture

d.) Will not deteriorate with age

#18. The letters DPDT are used to identify a type of ____.

a.) Insulation

b.) Fuse

c.) Motor

d.) Switch

#19. Conductor sizes are expressed _______.

a.) Only in circular mils

b.) In AWG or in circular mils

c.) In diameter or area

d.) In AWG or millimeters

#20. When the size # 12 of a stranded wire is referred to, this number specifies the:

a.) Strength of wire

b.) Cross-sectional area of the wire

c.) Square inch area of the insulation

d.) The pounds per square inch

#21. To increase the life of an incandescent light bulb you could ______.

a.) Use at a higher than rated voltage

b.) Use at a lower than rated voltage

c.) Turn off when not in use

d.) Use at a higher wattage

#22. To increase the life of an incandescent light bulb you could ______.

a.) Use at a higher than rated voltage

b.) Use at a lower than rated voltage

c.) Turn off when not in use

d.) Use at a higher wattage

#23. The current-carrying capacity of conductors expressed in amperes is ______.

a.) Demand

b.) Pressure

c.) Ampacity

d.) Duty-cycle

#24. The output winding of a transformer is called the ______.

a.) Primary

b.) Output

c.) Secondary

d.) Both a & b

#25. If a test lamp lights when placed in series with a condenser and a suitable source of DC, it is a good indication that the condenser is ______.

a.) Full charged

b.) Short circuited

c.) Open-circuited

d.) Fully discharged

#26. A pendant fixture is a ____.

a.) Hanging fixture

b.) Recessed fixture

c.) Bracket fixture

d.) None of these

#27. A multimeter is a combination of ______.

a.) Ammeter, ohmmeter, and wattmeter

b.) Voltmeter, ohmmeter, ammeter

c.) Voltmeter, ammeter, and megger

d.) Voltmeter, wattmeter, ammeter

#28. The total opposition to current flow in an AC circuit is expressed in ohms and is called ____.

a.) Impedance

b.) Conductance

c.) Reluctance

d.) Resistance

#29. A low energy power circuit _____.

a.) Is a remote-control circuit

b.) Is a signal circuit

c.) Has its power supplied by transformers and batteries

d.) None of these

#30. The electric pressure of a circuit would be the ________

b.) Voltage

b.) Amperage

c.) Resistance

d.) Wattage

#31. Three-way switching does not use the following conductor:

a.) Ungrounded

b.) Traveler

c.) Grounded

d.) Switch leg

#32. Electricity is sold by the kilowatt which is _____ watts.

a.) 10,000

b.) 1000

c.) 100

d.) 100,000

#33. The _____ angle is the angle between the real power and the apparent power.

a.) Lag

b.) Power factor

c.) Voltage-current

d.) Watt

#34. When applying rubber tape to an electrical splice, it would be necessary to _____.

a.) Stretch the tape properly during the application

b.) Apply an adhesive to the splice before applying the tape

c.) Apply the rubber tape after any other tape

d.) Apply heat to the tape when installing

#35. Metal cabinets used for lighting circuits are grounded to ______.

a.) Reduce shock hazard

b.) Eliminate electrolysis

c.) Assure that the fuse will blow in a defective circuit

d.) Simplify the wiring

#36. The larger the conductor, the _____.

a.) Higher the resistance

b.) Lower the ampacity

c.) Higher the voltage

d.) Lower the resistance

#37. Receptacles in residential wiring are regularly connected in ______.

a.) Parallel

b.) Perpendicular

c.) Series

d.) Diagonal

#38. The efficiency of a motor is measure of _____.

a.) The natural speed of the motor

b.) The torque the motor produces

c.) How well it converts electrical energy into mechanical energy

d.) The power output of the motor in horsepower

#39. Brass is an alloy of ______.

a.) Zinc and copper

b.) Lead and copper

c.) Tin and lead

d.) Lead and tin

#40. The term “open circuit” means ______.

a.) The wire is in an open area

b.) The wiring is exposed on a building

c.) All parts of the circuit are not in contact

d.) The circuit has one end exposed

#41. Silver and gold are better conductors of electricity than copper; however, the main reason copper is used is its ______.

a.) Weight

b.) Strength

c.) Melting point

d.) Cost is less

#42. Which type of the following portable fire extinguishers should be used on a live electrical fire?

a.) Carbon dioxide

b.) Water

c.) Foam

d.) Soda-acid

#43. At least two persons are required to be present during a high-voltage test because _____.

a.) One person can cover while the one is on break

b.) High voltage is too heavy for one

c.) If one person is hurt the other person can help

d.) It eliminates over time

#44. A load is considered to be continuous if it is expected to continue for _____.

a.) 1⁄2 hour

b.) 1 hour

c.) 2 hours

d.) 3 hours

#45. When accidentally splashing a chemical into the eyes the best immediate first aid solution is to ______.

a.) Look directly into the sun

b.) Rub eyes with dry cloth

c.) Flush eyes with clean water

d.) Close eyes quickly

#46. A single-pole switch to operate a light will have the wiring connected in the ____ conductor.

a.) Grounded

b.) Identified

c.) Ungrounded

d.) Neutral

#47. A generator exciter uses _____ current.

a.) Alternating

b.) Direct

c.) Neither alternating nor direct

d.) Either alternating or direct

#48. The Code considers low voltage to be _____.

a.) 480 volts or less

b.) 600 volts or less

c.) 24 volts

d.) 12 volts

#49. If the voltage is doubled the ampacity of a conductor _____.

a.) Increase

b.) Decrease

c.) Doubled

d.) Remains the same

#50. The output rating of a one horsepower motor is ______.

The output rating of a one horsepower motor is ______. a.)1840 watts

b.) 746 watts

c.) 1500 watts

d.) 1000watts

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