QUESTION BANK #4 cjong

80. Which one is used on conduits and are located inside and outside of the box. A. Couplings B. Bushings C. Locknuts D. Screws

C

43. A small tool with a tapered drill point used to make a pilot hole for wood screw mounting. A. Screw driver B. Center punch C. Puller D. Gimlet

D

44. How much is the resistance of a 600 W, 120-V toaster? A. 0.2 ohm B. 5 ohms C. 20 ohms D. 24 ohms

D

100. Conductors supplying a heating unit shall be calculated at ___ percent times the heating load plus the blower motor. A. 125 B. 100 C. 130 D. 115

A

12. How many kilowatts is equal to 200 joules per second? A. 0.2 B. 200 C. 0.02 D. 2

A

16. A resistor when connected across a 24-V battery draws a current of 1 mA. What is the required resistance? A. 24,000 ohms B. 2,400 ohms C. 24 ohms D. 2.4 ohms

A

18. A dry cell has internal resistance of 0.02 ohm and a terminal voltage of 1.5 V on open circuit. What will be its terminal voltage if a 0.1-ohm resistance is connected across its terminals? A. 1.25 V B. 1.20 V C. 1.42 V D. 1.15 V

A

2. Electromotive force is measured by a ____. A. voltmeter B. megger C. clamp ammeter D. galvanometer

A

21. A dry cell has an internal resistance of 0.02 ohm and open circuit voltage of 1.5V. Calculate the power delivered to a resistor of 0.6-ohm resistance. A. 3.5 watts B. 2.4 watts C. 2.0 watts D. 3.8 watts

A

24. Power factor is defined as the ratio of A. watts to volt-ampere B. volt-amperes to reactive C. volt- amperes to watts D. volts-amperes

A

28. Grease is a lubricant that is basically a combination of ____. A. oil and soap B. water and soap C. oil and water D. oil, water and soap

A

50. The rating of storage battery that delivers 15 amps for 12 hours is ____. A. 180 Ah B. 270 Ah C. 150 Ah D. 360 Ah

A

33. Which of the following switches is the same as a three-way switch? A. Single-pole double throw switch B. Double-pole single throw switch C. Single-pole single throw switch D. Double-pole double throw switch

A

36. Which of the following motors produce lagging power factor? A. Induction motor B. Series motor C. Compound motors D. Synchronous motors

A

39. A single phase motor is taking 20 A from a 400 V supply at 0.75 lagging power factor. What is the power taken? A. 4,000 W B. 6,000 W C. 8,000 W D. 5000 W

A

40. Calculate the current drawn by a 100-W, 110 V incandescent lamp? A 0.91 A B. 1.21 A C. 1.10 A D 0.89 A

A

45. To protect battery terminals from corroding, they should be covered with ____. A. grease B. electrical tape C. motor oil D. white lead

A

48. The direction of rotation a three phase motor can be reversed by A. switching any two of the three leads B. dismantling the motor and switching two leads C. switching all three leads D. none of these

A

5. The internal resistance of a milliammeter should be very low in order to have A. a negligible effect on the circuit current B. maximum voltage drop across the meter C. a current which will not damage the meter D. all of these

A

51. A short length of a conductor used to make a connection between terminals or around a break in a circuit. A. Jumper B. Guy C. Bonding wire D. Tie wire

A

52. The surface nonmetallic raceway may NOT be used in the following locations EXCEPT one. Which one is this? A. In dry locations B. Where concealed C. Where subject to severe physical damage D. In hoistways

A

59. Cables operated at over _____shall be shielded. A. 2,000 V B. 1,000 V C. 3,000 V D. 2,500 V

A

62. The average distance between down conductors in a lightning protection system shall NOT exceed A. 30 m B. 20 m C. 15 m D. 25 m

A

63. A storage battery supplying emergency lighting and power shall maintain no less than 87.5 % of full voltage at total load for a period of at least A. 1.5 hours B. 2.5 hours C. 2.0 hours D. 1.0 hour

A

69. Ground connections shall be made at approximately every other steel column around the perimeter of the building and shall NOT be more than ____apart. A. 18 m B. 20 m C. 16 m D. 24 m

A

76. For school buildings, the general lighting load is ____VA per square meters. A. 24 B. 28 C. 16 D. 8

A

78. No parts of cord connected fixtures, hanging fixtures or pendants shall be located within a zone measured ____horizontally from a bathtub rim. A. 900 mm B. 1,000 mm C. 800 mm D. 700 mm

A

89. Individual open conductors and cables other than service entrance cables A. 3,100 mm B. 2,500 mm C. 3,700 mm D. 3, 000 mm

A

90. Pipelines with impedance heating shall not operate at greater than____. A. 30 V B. 24 V C. 50 V D. 100 V

A

RME Board Exam 17. A device used to remove the sharp burrs or rough edges is called ____. A. reamer B. threader C. hickey D. bender

A

RME Board Exam 20. The condition of Ohm's law is that A. the temperature should remain constant B. the temperature should vary C. ratio V / I should be constant D. current should be proportional to voltage

A

RME Board Exam 74. What locations do NOT allow the installation of PVC rigid conduits? A. Hazardous locations B. Corrosive locations C. Wet locations D. In concealed locations

A

1. How much is the load current for a 100-W incandescent bulb connected to a 120 V power line? A. 1.2 A B. 0.833 A C. 8.33 A D 0.12 A

B

13. A junction transistor has three terminals namely: A. anode, cathode and triode B. emitter, base and collector C. base, receiver and collector D. positive, negative and ground

B

15. The pointer or needle of an indicating instrument is usually made from A. soft iron B. aluminum C. silver D. manganin

B

26. The presence of current is only made known by the effect it produces. Three important effects are: A. heating, electric shock and generation B. heating, magnetic and electric shock C. generation, chemical and electric shock D. heating, magnetic and chemical

B

29. Generally all ac electric motors operate on the principle of Induction or . A. conduction B. repulsion C. capacitance D. magnetism

B

42. The device used to attenuate specific signals is the A. splitter B. drop tap C. line tap off D. trap

D

30. In making a resistance test, remember that the resistance of a short circuit is A. infinite B. approximately zero C. midway between high and low range D. slightly above the midrange

B

31. For prevent from an electric shock, electrical ladders should have A. plastic footings B. rubber footings C. wood footings D. metal footings

B

34. A synchronous motor when under-excited acts like ____. A. a resistor B. an Inductor C. a capacitor D. all of these

B

4. The power factor of a circuit is approximately 100 % if the circuit load consists only of A. motors B. incandescent lamps C. fluorescent lamps D. capacitors

B

57. For grounding electrode to which portable or mobile equipment system neutral impedance is connected, shall be isolated from the ground by at least a certain distance from any other system or equipment grounding electrode. What is this distance? A. 4,000 mm B. 6,000 mm C. 5,000 mm D. 3,000 mm

B

58. Type IGS cable is using a dry kraft paper tape and an SF6 gas. What do you mean by SF6? A. Sulfur fluoride B. Sulfur hexafluoride C. Sulfur ferrite D. None of these

B

60. Space heating cables shall be secured at intervals NOT exceeding _____. A. 300 mm B. 200 mm C. 400 mm D. 500 mm

B

61. A run conduit between outlets, between fittings, between outlet and fitting shall not contain more than the equivalent of quarter bends. A. 2 B. 4 C. 3 D. 5

B

67. The minimum size of type IGS cable shall be _____. A. 100 mm2 B. 125 mm2 C. 150 mm2 D. 200 mm2

B

75. Incandescent lamp fixtures shall be marked to indicate the allowable wattage of lamps. The markings shall be permanently installed in letters at least ____high. A. 6.0 mm B. 6.4 mm C. 6.3 mm D. 6.5 mm

B

77. The feeder demand factor for three kitchen equipment other than dwelling kitchen equipment shall be ____. A. 100 % B. 90 % C. 70% D. 80%

B

81. The circuit conductors between the service entrance equipment or isolated generating plant and the branch circuit overload device or devices. A. overcurrent protector B. feeder C. motor controller D. disconnecting switch

B

86. The minimum diameter of air terminal used at the top of a heavy duty smoke or vent stacks shall be _____, exclusive of the corrosion protection. A. 10 mm B. 15 mm C. 13 mm D. 20 mm

B

87. In damp or wet locations, boxes and fittings should be properly placed or insulated to prevent A. dust from entering the box or fitting B. water from entering the box or fitting C. wiring exposure D. grounding

B

93. Equipment having an open circuit voltage exceeding ___ shall NOT be installed in dwelling occupancies. A. 500 V B. 300 V C. 250 V D. 230 V

B

95. The area within ___ horizontally from an aircraft power plant shall be classified hazardous under class I, Division 2 location. A. 1,200 mm B. 1,500 mm C. 1,800 mm D. 2,000 mm

B

97. For a motor starter to be in sight of the controlled motor, it must NOT be more than _____ meters away. A. 20 B. 15 C. 25 D. 10

B

RME Board Exam 27. A toaster takes 10 A from a 120- volt line. The power used is A. 12 W B. 1200 W C. 130 W D. none of these

B

RME Board Exam 38. To control a lamp from five different places, an electrician would install the following: A. three 4-way and two 2-way switches B. two 3-way and three 4-way switches C. four 3-way and one 4-way switches D. three 3-way and two 4-way switches

B

RME Board Exam 8. One foot of a certain size of nichrome wire has a resistance of 1.63 ohms. To make a heating element for a toaster that will use 5 A at 110 V, the number of feet of wire needed is approximately A. 17.9 B. 13.5 C. 8.2 D. 5.5

B

11. What important data can be gathered by performing an open circuit test on transformers? A. Rated power output B. Resistance and reactance of windings C. Core losses D. Voltage and current ratios

C

14. Which of the following electric machine is equipped with slip rings? - A. dc motor or dc generator B. Split-phase motor C. ac generator D. Repulsion type motor

C

19. An instrument used to measure the speed of a motor or a generator. A. Hydrometer B. Thermometer C. Tachometer D. Oscilloscope

C

23. A frequency of 60 Hz means that the cycle is repeated . A. 60 times a minute B. 60 times an hour C. 60 times a second D. none of these

C

25. What is the total kVA rating of 230 V, three-phase circuit supplied by a 20-A circuit breaker? A. 6.42 kVA B. 8.55 kVA C. 7.96 kVA D. 4.60 kVA

C

32. Which of the following is the best advantage of a dc motor over an ac motor? A. It is easier to reverse its speed. B. It has a higher speed rating C. It has a better speed control D. All of these

C

37. Electrical symbol represented by a circle with a plus sign inside it. A. Push button B. Bell C. Riser down D. Pull box

C

46. The insulation resistance of the winding of an electric motor is measured by A. ammeter B. galvanometer C. megohmmeter D. voltmeter

C

47. A synchronous converter is used to change ____. A. speed B. frequency C. ac voltage to dc voltage and vice-versa D. mechanical energy to electrical energy

C

6. What is the approximate neutral current in a 4-wire system with phase A carrying 68 A, phase B carrying 88 A and phase C carrying 96 A? A. 20 A B. 30 A C. 25 A D. 15 A

C

64. A general term covering an assembly or assemblies of devices for the interruption, control and metering of electric power. A. Control system B. Power system C. Switchgear D. Instrumentation

C

66. What is the temperature rating of THW Insulation? A. 60 °C B. 85 °C C. 75 °C D. 90 °C

C

7. What motor is best suited to drive small electric fans? A. Universal motor B. Shunt motor C. Capacitor run motor D. Resistance split-phase motor

C

73. Flat cable assemblies shall have conductors of ____special stranded copper wires. A. 2.0 mm2 B. 3.5 mm2 C. 5.5 mm2 D. 8.0 mm2

C

9. The proper way of measuring an unknown voltage with a multi-tester is to A. start measuring at the lowest range of the meter B. start measuring at the midrange of the meter C. start measuring at the highest range D. de-energized the circuit first

C

94. Concealed knob and tube wiring conductors shall be rigidly supported on knobs not More than a certain minimum distance apart. What is the distance? A. 2,000 mm B. 1,500 mm C. 1,300 mm D. 2,500 mm

C

96. If the duty cycle of a motor-generator arc welder is 100% the supply conductors shall not be less than ___ of its rated primary nameplate current. A. 115% B. 125% C. 100% D. 130%

C

RME Board Exam 10. Temperature coefficient of a conductor is defined as the A. increase in resistance per degree absolute B. increase in resistance per degree centigrade C. increase in resistance per ohm per degree absolute D. none of these

C

RME Board Exam 68. This is a single conductor or multi-conductor assembly provided with or without an overall covering, primarily used for services. A. Tray cable B. Clad cable C. Service entrance cable D. Flat conductor cable

C

RME Board Exam 79. To provide for small appliance load in a dwelling unit, the feeder should be computed at A. 2,400 watts B. 3,000 watts C. 1,500 watts D. 3,600 watts

C

RME Board Exam 99. Most wires used in residential house wiring are usually insulated by which of the following? A. Asbestos B. Cotton C. Thermoplastic D. Varnished cambric

C

22. Each component in a motor controller must be approved for which of the following? A. The voltage to which it will be connected. B. The current it must carry. C. The horsepower that it must it control D. All of these

D

3. All switches that have been turned off before doing repair work on any electrical equipment, shall be ____. A. left as it is B. left with its cover open C. left with a note stating that the work is being done D. left with its cover closed and padlocked

D

35. Which of the following statements describe a synchronous motor? A. It is not self-starting B. It requires both ac and dc supplies C. It is used for power factor improvement D. All of these

D

49. The least efficient lighting source is the A. metal halide B. fluorescent C. mercury D. incandescent

D

53. A fabricated assembly of insulated conductors in a flexible metallic enclosure. A. Type MI B. Type USE C. Type UF D. Type AC

D

54. Fixture wires shall NOT be smaller than ____. A. 0.5 mm2 B. 1.25 mm2 C. 2.0 mm2 D. 0.75 mm2

D

55. Flat cable assemblies shall NOT be installed _____. A. in hoistways B. in any hazardous locations C. outdoors D. all of these

D

65. Thermoplastic insulated fixture wires shall be durably marked on the surface at intervals NOT exceeding A. 900 mm B. 500 mm C. 1,000 mm D. 600 mm

D

70. Type AC cable shall NOT be permitted to be used ____. A. in storage battery B. on cranes or hoists C. In motion pictures D. all of these

D

72. An appliance which can easily be moved from one place to another in normal use. A. Fixed appliance B. Accessible appliance C. Stationary appliance D. Portable appliance

D

82. Open wiring on insulators shall be permitted only for wiring systems of or less. A. 150 V B. 240 V C. 300 V D. 600 V

D

83. Which of the following metals is the best conductor of electricity? A. Steel B. Iron C. Aluminum D. Copper

D

84. The nearest ground terminal shall be NOT less than ___from the foundation wall. A. 760 mm B. 800 mm C. 550 mm D. 600 mm

D

88. Busbars shall be made from copper having a minimum conductivity of how many percent? A. 100% B. 96% C. 98% D. 97%

D

91. Watercraft's switchboards shall be provided with a clear working space at least ____at the front. A. 1,500 mm B. 1,200 mm C. 1,600 mm D. 1,000 mm

D

92. An insulated grounded conductor of 14mm² or smaller shall be identified by a continuous ____ outer finish along its entire length. A. green B. black C. green with yellow stripes D. white or natural gray

D

98. Which of the following materials is used to support the conductor in the open wiring method? A. Insulated wire stoppers B. Insulated nails C. Rosettes D. Split knobs

D

RME Board Exam 41. What is in brief, the basis of operation of a 3-phase induction motor? A. Motor is started B. Motor is excited C. Magnetic field is shorted D. Revolving magnetic field is produced when a 3-phase stator winding is fed from a 3-phase supply

D

RME Board Exam 56. For bare metal parts, busbars, etc. of opposite polarity held free in air shall maintain a minimum spacing of ____for voltages rated not over 250 V. A. 10 mm B. 20 mm C. 16 mm D. 19 mm

D

RME Board Exam 71. Transformers that contain liquid that will burn shall be installed only in approved vaults and shall also comply with the following conditions EXCEPT one. Which one is this? A. Ample ventilation shall be provided for the continuous removal of flammable gases B. Vent openings shall lead to a safe locations outside the building C. All vent ducts and openings shall be of sufficient areas to reliable explosion pressures within the vault D. There shall be a robust door between the vault and any non-hazardous location

D

RME Board Exam 85. Conductors shall be securely attached to the buildings using fasteners. Fasteners shall be spaced NOT more than A. 760 mm B. 600 mm C. 880 mm D. 900 mm

D