RME Exam Reviewer Part 3 | Electrician Philippines

#1. Resistance opposes the flow of current in a circuit and is measured in __________.

a. Farads

b. Joules

c. Ohms

d. Henrys

#2. The electromotive force required to cause a current to flow may be obtained __________. I. Thermally II. Mechanically III. Chemically

a. I only

b. I & III only

c. II & III only

d. I, II, & III

#3. Which of the following is true?

a. Wooden plugs may be used for mounting electrical equipment in concrete.

b. The high-leg conductor of a 4-wire delta is identified blue in color.

c. The minimum size service permitted by the Code for a residence is 100 amps.

d. The ungrounded conductor is connected to the screw shell of a lampholder.

#4. Mulitple start buttons in a motor control circuit are connected in __________.

a. Series

b. Parallel

c. Series-parallel

d. None of these

#5. Which of the following is not true?

a. A fluorescent fixture is more efficient than an incandescent fixture.

b. Room temperature has an effect on the operation of a fluorescent lamp .

c. Fluorescent fixtures have good power factor with the current leading the voltage.

d. The life of a fluorescent bulb is affected by starting and stopping.

#6. Which of the following is not true?

a. Feeder demand factors are applicable to household electric ranges.

b. A green colored conductor can be used as an ungrounded circuit conductor.

c. Insulated conductors #6 or smaller shall be white or gray, no marking tape permitted.

d. All joints or splices must be electrically and mechanically secure before soldering.

#7. Special permission is __________.

a. Granted by the electrical foreman on the job.

b. Verbal permission by the inspector.

c. Given only once on one blueprint change request.

d. The written consent of the authority having jurisdiction.

#8. One million volts can also expressed as __________.

a. 1 millivolt

b. 1 kilovolt

c. 1 megavolt

d. 1 microvolt

#9. Resistance in a circuit may be __________. I. Resistance of the conductors II. Resistance due to imperfect contact

a. I only

b. II only

c. Both I & II

d. Neither I nor II

#10. A magnetic field is created around a conductor __________.

a. Whenever current flows in the wire, provided the wire is made of magnetic materials.

b. Only when the wire carries a large current.

c. Whenever current flows in the conductor.

d. Only if the conductor is formed in a loop.

#11. A universal motor has brushes that ride on the __________.

a. Commutator

b. Stator

c. Inter-pole

d. Field

#12. How many kw hours are consumed by 25-60 watt light bulbs burning 5 hours in a 120v circuit?

a. 1.5

b. 180

c. 7.5

d. 75

#13. A dynamo is __________.

a. A pole line insulator.

b. A tool used to test dielectric strength.

c. A meter used for checking the R.P.M of a motor.

d. A machine for converting mechanical energy into electrical energy.

#14. Which of the following is/are generally used for field magnets? I. Copper II. Steel III. Wrought iron

a. I & II only

b. I & III only

c. II & III only

d. I, II, & III

#15. Which of the following is not true?

a. All receptacles on 15 and 20 amp branch circuits must be of the grounding type.

b. Splices and joints shall be covered with an insulation equivalent to the conductor insulation.

c. The size of the conductor determines the rating of the circuit.

d. All 15 and 20 amp receptacle installed in a dwelling bathroom shall have GFCI protection.

#16. The difference between a neutral and a grounded circuit conductors is __________.

a. Only a neutral will have equal potential to the ungrounded conductor.

b. Only a neutrals outer covering is white or natural gray.

c. Only a neutral carries unbalanced current.

d. There is no difference.

#17. The normal rotation of an induction motor is __________ facing the front of the motor (The front of a motor is the end opposite the shaft).

a. Clockwise

b. Counter clockwise

#18. A function of a relay is to __________.

a. Turn on another circuit

b. Produce thermal electricity

c. Limit the flow of electrons

d. Create a resistance in the field winding

#19. In solving series-parallel circuits, generally you would __________.

a. Treat it as a series circuit

b. Reduce it to its simplest form

c. Assume that all loads are equal

d. Treat it as a parallel circuit.

#20. Which of the following is not true?

a. It is an electrical impossibility to have a circuit with only inductive reactance because the metallic wire has a resistance.

b. The voltage of a circuit is the greatest effective difference of potential that exists between any two conductors of a circuit.

c. The current is said to lag the voltage in a circuit that has only capacitive reactance.

d. Power factor is the phase displacement of current and voltage in an AC circuit.

#21. Rheostats and potentiometers are types of __________ resistors.

a. Film

b. Variable

c. Fixed

d. Wirewound

#22. The Wheatstone bridge method is used for accurate measurements of __________.

a. Voltage

b. Amperage

c. Resistance

d. Wattage

#23. Which of the following is true?

a. Conductors of different systems may not occupy the same enclosure.

b. Knife switches should be mounted in a horizontal position.

c. 75 amps is a standard size fuse.

d. Circuits are grounded to limit excess voltage to ground, which might occur from lightning or exposure to other higher voltage sources.

#24. Electrical power is measure of __________.

a. Work wasted

b. Voltage

c. Rate at which work is performed

d. Total work performed

#25. A laminated pole is __________.

a. One built up of layers or iron sheets, stamped from sheet metal and insulated.

b. Used in transmission lines over 100kv.

c. A pole soaked in creosote.

d. Found in the western part of the U.S.A.

#26. What percentage of the maximum (peak) voltage is the effective (R.M.S.) voltage?

a.100%

b. 70.7%

c. 63.7%

d. 57.7%

#27. A low power factor is commonly caused by __________. I. Induction motors II. Synchronous motors III. Fluorescent lights

a. III only

b. II & III only

c. I & III only

d. I, II& III

#28. Unity power factor, which means that the current is in phase with the voltage, would be __________.

a. 0.50

b. 0.80

c. 0.10

d. 1.0

#29. Which of the following is not true?

a. Equal currents flow in the branches of parallel circuits.

b. The total resistance of a parallel circuit is less than the smallest resistor in the circuit.

c. The total current in a parallel circuit is the sum of the branch currents.

d. In a parallel circuit, there is more than one path for the current flow.

#30. Hysteresis is __________.

a. The tool used to read the specific gravity of a battery.

b. The lagging of magnetism, in a magnetic metal, behind the magnetizing flux which produces it.

c. The opposite of impedance.

d. None of these

#31. Which of the following is not true?

a. Conduit painted with enamel cannot be used outdoors.

b. All AC phase wires, neutral and equipment grounding conductors if used, must be installed in the same raceway.

c. PVC shall have a minimum burial depth of 24 “.

d. EMT raceway can be installed in an air conditioning-space heating duct.

#32. The electric pressure of a circuit would be the __________.

a. Voltage

b. Amperage

c. Resistance

d. Wattage

#33. Permeability is __________.

a. The opposite of conductance.

b. A measure of the ease with which magnetism passes through any substance.

c. The total resistance to current flow.

d. The liquid substance in a battery.

#34. When a circuit breaker is in the open position __________. I. You have a short in the ungrounded conductor. II. You have a short in the grounded conductor.

a. I only

b. II only

c. Either I or II

d. both I & II

#35. A commutator is __________.

a. A ditching machine

b. The inter-poles of a generator

c. A device for causing the alternating currents generated in the armature to flow in the same direction in the external circuit.

d. A transformer with a common conductor.

#36. Which of the following is true?

a. EMT may be treaded

b. The “white” colored conductor connected to the silver colored post on a duplex receptacle on

c. Plastic water pipe is approved to be used for electrical conduit.

d. The screw shell of a lampholder may support a fixture weighing 6 pounds.

#37. To fasten a box to a terra cotta wall you would use which of the following?

a. Wooden plugs

b. Lag bolt

c. Expansion bolt

d. Toggle bolt/rawl plugs

#38. If a 240-volt heater is used on 120 volts, the amount of heat produced will be __________.

a. Twice as great

b. Four times as great

c. 1⁄4 as much

d. The same

#39. Which of the following about a strap wrench is/are true? I. You can turn pipe using one hand II. Use in a tight corner III. Use on different sizes of pipe

a. I only

b. II only

c. III only

d. I, II & III

#40. When soldering a joint, the flux is used to __________.

a. Keep the wire cool

b. Keep the surface clean

c. Lubricate the joint

d. Maintain a tight connection

#41. A minimum thickness of __________ inch/inches of concrete over conduits and raceways should be used to prevent cracking.

a. 1

b. 2

c. 3

d. 4

#42. Wire Connectors are generally classified as __________ type(s). I. Thermal II. Pressure

a. I only

b. II only

c. both I & II

d. neither I nor II

#43. One of the disadvantages of indenter or crimp connectors is __________.

a. They must be re-crimped at each annual maintenance inspection.

b. That special tools are required to make the joint.

c. Eventually they will loosen.

d. They can only be used for copper conductors.

#44. The usual service conditions under which a 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 40°C (104°F) and average temperature of the surrounding cooling air during any 24-hour period not exceeding 30°C (86°F).

a. I only

b. II only

c. III only

d. I,II& III

#45. The transferring of electrons from one material to another would be __________.

a. Electrochemistry

b. Static electricity

c. Solar electricity

d. Piezoelectricity

#46. Conductors supplying two or more motors shall have an ampacity equal to that sum of the following current rating of all the motors plus __________ % of the highest rated motor in the group.

a. 125

b. 80

c. 100

d. 25

#47. The symbol for a wye connection is __________.

a. Σ

b. Δ

c. φ

d.γ

#48. Which of the following is not true?

a. An autotransformer may be used as part of the ballast for lighting circuits.

b. A branch circuit can never be supplied through an autotransformer.

c. The losses of the autotransformer are less than those of a two-coil transformer.

d. Autotransformers may be used as starting compensators for AC motors.

#49. Which of the following meters is a wattmeter?

a. I only

b. II only

c. III only

d. I, II & III

#50. The voltage of a circuit is best defined as __________.

a. The potential between two conductors.

b. The greatest difference of potential between two conductors.

c. The effective difference of potential between two conductors.

d. The average RMS difference of potential between any two conductors.

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