RME Technical Subjects Test 8

Prepare for the RME Exam
Practice Your Knowledge

Take the test now. The test is 50 items. 
Finish the test and see your result.
Share your results.

 

#1. When stripping insulation from an aluminum conductor ________. I. remove insulation as you would sharpen a pencil II. ring the conductor and slip the insulation off the conductor III. peel the insulation back and then cut outwards

a.) I, II and III

b.) I and II only

c.) I and III only

d.) II and III only

#2. A common fuse and circuit breaker works on the principal that _______.

a.) voltage develops heat

b.) voltage breaks down insulation

c.) current develops heat

d.) currents expands a wire

#3. The advantage of cutting a metal rigid conduit with a hacksaw rather than a pipe cutter is _______.

a.) you do not need a vice

b.) less energy required in cutting

c.) less reaming is required

d.) threading oil is not required

#4. A shunt generators has an armature current of 100 A and a shunt field current of 3.5 A. What is its output in kW if the terminal voltage is 230 volts?

a.) 23.8 kW

b.) 22.2 kW

c.) 23.0 kW

d.) 805 W

#5. Laminations are used in transformers to prevent __________.

a.) copper loss

b.) eddy current loss

c.) weight

d.) counter EMF

#6. You should close a knife switch firmly and rapidly as there will be less_______.

a.) likelihood of arcing

b.) wear on the contacts

c.) danger of shock

d.) energy used

#7. What is the purpose of connecting cells in series?

a.) To increase the current rating of the combination

b.) To decrease the internal resistance of the combination

c.) To increase the voltage rating of the combination

d.) To increase the power rating of the combination

#8. The number of wattmeter/s necessary to measure the power in the load of a unbalanced 3-phase, 4-wire system is

a.) 3

b.) 2

c.) 4

d.) 1

#9. Which of the following would improve the resistance to earth I. Use multiple ground rods II. Treat the soil III. Lengthen the ground rod

a.) I only

b.) II and III only

c.) I and III only

d.) I, II and III

#10. What is the metric size equivalent of 500 MCM?

a.) 250 mm²

b.) 750 mm²

c.) 500 mm²

d.) 1,000 mm²

#11. A fellow electrician is not breathing after receiving an electrical shock, but is no longer in contact with the electricity, the most important thing for you to do is ______.

a.) start artificial respiration immediately

b.) cover the person and keep warm

c.) move the person to a window

d.) remove the person shoes

#12. A wrench you would not use to connect rigid metal conduit is a ______ wrench.

a.) box end

b.) chain

c.) strap

d.) stillson

#13. Continuous duty is _____.

a.) a load where the maximum current is expected to continue for three hours or more

b.) a load where the maximum current is expected to continue for one hour or more

c.) intermittent operation in which the load conditions are regularly recurrent.

d.) operation at substantially constant load for an indefinitely long time

#14. The specific resistance of a wire depends on ______. I. its length II. its material iii. its cross-sectional area

a.) I and II only

b.) I, II, and III

c.) I and III only

d.) II and III only

#15. A capacitor performs which of the following functions:

a.) It opposes changes in voltage

b.) It generates voltage

c.) It creates changes in amperage

d.) None of the above

#16. A residential house has a lighting load of 200 W and a small appliance load of 1000 W. If they are used at the same time, what will be the monthly bill at an energy cost of P7.00 per kilowatt-hour?

a.) P 201.60

b.) P 252.00

c.) P 6,048.00

d.) P 11.67.00

#17. The wheatstone bridge method is used for accurate measurements of _______.

a.) voltage

b.) amperage

c.) resistance

d.) wattage

#18. The usual service conditions under which transformer should be able to carry its rated load are _____. I. at rated secondary voltage or not in excess of 105% of the rated value II. at rated frequency III. temperature of the surrounding cooling air at no time exceeding 400 (1400F) and average temperature of the surrounding cooling air any 24-hour period not exceeding 300C (860F)

a.) I only

b.) II only

c.) III only

d.) I, II and III

#19. To adjust a voltage generated by a constant speed DC generator, you would change the _____.

a.) stator

b.) slip rings

c.) brushes

d.) field current

#20. As the power factor of a circuit is increased ________.

a.) reactive power is decreased

b.) active power is decreased

c.) reactive power is increases

d.) both active and reactive power are increased

#21. In general, motors are designed to operate in a maximum ambient temperature of ______ unless specifically designed for a higher temperature.

a.) 60°C

b.) 50°C

c.) 45°C

d.) 40°C

#22. A circuit breaker that has purposely introduced into it a delay in the tripping action and which delay decreases as the magnitude of the current increases is a __________ circuit breaker.

a.) inverse time

b.) adjustable

c.) control vented

d.) vented power

#23. Red – Yellow – Gold – Gold indicates a resistance of:

a.) 2.4 ohm

b.) 24 kilo-ohm

c.) 24 ohm

d.) 0.24 ohm

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

a.) ungrounded

b.) traveler

c.) grounded

d.) switch leg

#25. In sockets, extension cord is protected by means of the __________knot.

a.) underwriter’s

b.) clove hitch

c.) sheepshank

d.) western union

#26. The short circuit test on a transformer is a test for measuring its ______.

a.) insulation resistance

b.) copper losses

c.) iron losses

d.) equivalent resistance of the transformer

#27. A transformer has a primary voltage of 2400 V and a secondary voltage of 120 volts. If there are 40 turns on the primary, the secondary contains _____ turns.

a.) 12000

b.) 120

c.) 24000

d.) 60

#28. ________ is a self-acting, operating by its own mechanism when actuated by some impersonal influence, as for example, a change in current strength, pressure, temperature, or mechanical configuration.

a.) remote control

b.) automatic

c.) semi-automatic

d.) controller

#29. Solid wire is preferred instead of a stranded wire in panel wiring because ________.

a.) costs less than stranded

b.) solid will carry more current

c.) can be shaped better

d.) no derating required for solid

#30. Where the __________ is likely to be high, asbestos insulation on the conductor would be a good choice.

a.) temperature

b.) aluminum

c.) voltage

d.) amperage

#31. If two equal resistance conductors are connected in parallel, the resistance of the two conductors is equal to_______.

a.) the resistance of the conductors

b.) twice the resistance of one conductor

c.) one-half the resistance of the conductor

d.) the resistance of both conductor

#32. During one complete rotation of 360 degrees, a three-phase 6-pole AC 34 kVA alternator on a Y-connected system will have how many of the following rotations:

a.) 4

b.) 3

c.) 18

d.) 12

#33. Which of the following is used to control speed in a DC motor:

a.) Field winding

b.) A primary transformer

c.) Ground fault breaker

d.) A bonding jumper

#34. Inductance and capacitance are not considerations in a DC current for which of the following reasons:

a.) DC supply has no frequency

b.) DC supply carries power equal

c.) Both of the above

d.) None of the above

#35. Two transmission wires create corona when which of the following exists:

a.) The wires have a high potential difference

b.) The wires are installed overlapping or too close together

c.) The wires are spaced too far apart

d.) None of the above

#36. Three capacitors are in parallel. Their values are 0.0200 μF, 0.0500 μF and 0.10000 μF. The total capacitance is:

a.) 0.0125 μF

b.) 0.170 μF

c.) 0.1 μF

d.) 0.125 μF

#37. With respect to the fluorescent lamps, it is correct to state ______.

a.) the filaments seldom burn out

b.) the starters and tubes must be replaced at the same time

c.) they are easier to install than incandescent light bulbs

d.) their efficiency is less than the efficiency of incandescent light bulbs

#38. A fusestat is different than the ordinary plug fuse because a fusestat ____________.

a.) doesn’t have threads

b.) has left-hand threads

c.) has different size threads

d.) has an aluminum screw shell

#39. A magnetic field is created around a conductor_________.

a.) whenever current flows in the wire, provided the wire is made of magnetic material

b.) only when the wire carries a large current

c.) whenever current flows in the conductor

d.) 0nly if the conductor is formed into a loop

#40. How long a piece of aluminum wire 1.6 mm in diameter is needed to give a resistance of 1.5 ohms? Assume resistivity of aluminum is 2.8 x 10-8 ohm-meter.

a.) 108 meters

b.) 120 meters

c.) 128 meters

d.) 112 meters

#41. An electrical timer switch for lighting is normally connected in ________ with lighting circuit being controlled.

a.) series

b.) parallel

c.) sequence

d.) tandem

#42. The voltage produced by electromagnetic induction is controlled by_________.

a.) the number of lines of flux cut per second

b.) eddy currents

c.) the size of the magnet

d.) the number of turns

#43. The armature current drawn by any DC motor is proportional to the _______.

a.) motor speed

b.) voltage applied

c.) flux required

d.) torque applied

#44. Of the following _______ is a false statement.

a.) The term kilowatt indicates the measure of power which is all available for work.

b.) The term kilo-volt amperes indicate the power made up of an energy component and a wattles or induction component

c.) In an industrial plant, low power factor is usually due to under loaded induction motors

d.) The power factor of a motor is much greater at partial loads than at full load.

#45. When reduced to the most nominal component, the smallest element of matter is which of the following:

a.) One ohm of electrical current

b.) An atom

c.) Electrons

d.) None of the above

#46. A ____ is a braking system for an electric motor. I. Friction braking II. Plugging III. Dynamic braking

a.) I only

b.) III only

c.) I and III only

d.) I, II or III

#47. In a dc generator, the purpose of the commutator is to _____.

a.) rectify armature current

b.) convert magnetic lines of force to flux

c.) keep a constant voltage

d.) keep a constant amperage

#48. In an electrical conductor that consists of 16 strands, each with a diameter 0.0837 inches, the area of the conductor would be which of the following:

a.) 83.7 circular mils

b.) 83700 circular mils

c.) 70057 circular mils

d.) 112091 circular mils

#49. In a coil, the higher the level of self-inductance:

a.) The lower the level of resistance will be

b.) The longer the delay will be in establishing current through it

c.) The greater the level of flux produced will be

d.) None of the above

#50. Which of the following should be tested to check for voltage to ground:

a.) From the breaker to the grounding neutral

b.) From hot to neutral

c.) From a breaker to the cabinet

d.) All of the above

Previous

Finish

Results