This is the Multiple Choice Questions Part 9 of the Series in Philippine Electrical Code (PEC) as one of the Electrical Engineering topic. In Preparation for the REE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Exam Questions in Electrical Engineering field, Electrical Engineering Books, Journals and other Electrical Engineering References.
Continue Practice Exam Test Questions Part 9 of the Series
Choose the letter of the best answer in each questions.
⇐ MCQ in Philippine Electrical Code (PEC) Part 8 | REE Board Exam
401. An auxiliary conductor used in connection with remote measuring devices or for operating apparatus at a distant point.
A. Tie wire
B. Jumper wire
C. Pilot wire
D. Dummy wire
Answer: Option C
Solution:
402. RME Board April 1994, RME Board October 1995
Service entrance conductors passing over roots shall have a clearance over the roof which they pass of
A. 1000 mm
B. 2000 mm
C. 1500 mm
D. 2500 mm
Answer: Option D
Solution:
403. The conductors including splices and taps shall NOT fill the wireway to more than ____ percent of its area at that point.
A. 65
B. 70
C. 75
D. 80
Answer: Option C
Solution:
404. Liquid-tight metal conduit smaller than ____ electrical trade size shall NOT be used.
A. 20 mm
B. 15 mm
C. 12 mm
D. none of these
Answer: Option B
Solution:
405. Service drop conductors passing over residential property and driveways and those commercial areas not subject to truck traffic shall have a vertical clearance of ____.
A. 4600 mm
B. 5500 mm
C. 3700 mm
D. 4800 mm
Answer: Option A
Solution:
406. The equipment bonding jumper shall be permitted to be installed inside or outside of a raceway or enclosures where installed on the outside, the length of the equipment bonding jumper shall NOT exceed ____.
A. 2000 mm
B. 1500 mm
C. 1800 mm
D. 1200 mm
Answer: Option C
Solution:
407. An electrician should consider all electrical equipment live unless he definitely knows that they are not. The main reason of this practice is to avoid.
A. personal injury
B. energizing the wrong circuit
C. de-energizing the wrong circuit
D. unnecessary work
Answer: Option A
Solution:
408. Electrical floor assemblies shall NOT be installed _____.
A. where subject to corroded vapors
B. outdoors
C. in wet or damp locations
D. all of these
Answer: Option D
Solution:
409. In cases where there are energized parts normally exposed on the front of switchboards or motor control centers, the working space in front shall NOT be less than _____.
A. 1000 mm
B. 1500 mm
C. 2000 mm
D. 1800 mm
Answer: Option A
Solution:
410. Cabinet and cutout boxes shall have an air space of at least ____ between the base of the device and the wall of any metal cabinet or cutout box in which the device is mounted.
A. 1.5 mm
B. 1.8 mm
C. 2.0 mm
D. 2.4 mm
Answer: Option C
Solution:
411. Service conductors in cable shall NOT be smaller than ______.
A. 5.5 mm2
C. 3.5 mm2
B. 8.0 mm2
D. 14.0 mm2
Answer: Option A
Solution:
412. For non-dwelling receptacles loads, the demand factor for the first 10 kVA or less shall be
A. 60%
B. 70%
C. 80%
D. 100%
Answer: Option D
Solution:
413. In each conduit run entering an enclosure for switches, circuit breakers, relays and others that may produce high temperatures, seals on the conduit shall be installed within the certain length before entering the enclosure. What is this length?
A. 900 mm
B. 750 mm
C. 250 mm
D. 460 mm
Answer: Option D
Solution:
414. The ampacity of the conductors can be derated at most, _____ times(s).
A. two
B. one
C. three
D. four
Answer: Option C
Solution:
415. In the schedule of loads for lighting, which of the following contents is NOT necessary?
A. Protective device rating
B. Panel as numbered in the feeder diagram
C. Number of lighting outlets per circuit
D. Frequency rating
Answer: Option D
Solution:
416. If potential exceeding _____ are employed, a permanent warning sign shall be displayed.
A. 600 V
B. 500 V
C. 300 V
D. 1,000 V
Answer: Option A
Solution:
417. A load where maximum current is expected to continue for three hours or more.
A. Continuous load
B. Connected load
C. Maximum load
D. Average load
Answer: Option A
Solution:
418. Communication conductors shall NOT be smaller than _____.
A. 2.0 mm2
C. 3.5 mm2
B. 1.25 mm2
D. 5.5 mm2
Answer: Option A
Solution:
419. Receptacle and attachment plugs shall be permitted to be of lower ampere rating than the branch circuit but NOT less than ____ percent of the fixture full load current.
A. 100
B. 125
C. 115
D. 130
Answer: Option B
Solution:
420. A wye-delta starter for a single voltage three phase squirrel cage induction motor would require the connection of a certain number of wires from the motor. How many wires would be needed?
A. 3 wires
B. 9 wires
C. 6 wires
D. 12 wires
Answer: Option C
Solution:
421. At least how many receptacle outlet(s) shall be installed outdoors for a one family dwelling unit?
A. One
B. Two
C. Three
D. None of these
Answer: Option A
Solution:
422. What is the maximum permitted load of a 15 A branch circuit?
A. 10 A
B. 15 A
C. 12 A
D. 8 A
Answer: Option C
Solution:
423. Where a feeder supplies continuous load or any combination of continuous and non-continuous load. The rating of the overcurrent device shall NOT be less than the non-continuous load plus _____ of the continuous load.
A. 125%
B. 110%
C. 150%
D. 175%
Answer: Option A
Solution:
424. Faceplates of insulting material shall not be combustible and NOT less than _____ in thickness.
A. 2.0 mm
B. 2.3 mm
C. 3.0 mm
D. 2.5 mm
Answer: Option B
Solution:
425. RME Board April 1994
For raceway 20 mm trade size or larger containing conductors 22 mm2 or larger, the minimum length of the box in straight pulls shall NOT be less than _____ times the trade diameter of the largest raceway.
A. 8
B. 10
C. 6
D. 12
Answer: Option A
Solution:
426. Type MC cable shall NOT be used _____.
A. where exposed to corrosive materials
B. as direct burial to earth
C. where exposed to cinder fills
D. all of these
Answer: Option D
Solution:
427. Using aluminum or copper clad aluminum conductors, the minimum size of service entrance conductors shall be _____.
A. 8.0 mm2
B. 14.0 mm2
C. 5.5 mm2
D. 3.5 mm2
Answer: Option B
Solution:
428. Ground counterpoise conductor shall be soft copper wire NOT smaller than
A. 5.5 mm2
C. 3.5 mm2
B. 2.0 mm2
D. 8.0 mm2
Answer: Option D
Solution:
429. The disconnecting means for motor circuits rated up to 600 volts, shall have an ampere rating of at least _____ percent of the full load current of the motor.
A. 200
B. 115
C. 150
D. 125
Answer: Option B
Solution:
430. How many amperes will a 100 circuit breaker hold before tripping open the circuit? (Use rule of thumb).
A. 200 A
B. 500 A
C. 400 A
D. 300 A
Answer: Option D
Solution:
431. A device for transferring one or more load conductor connections from one power source to another.
A. Disconnecting switch
B. Master switch
C. Isolating switch
D. Transfer switch
Answer: Option D
Solution:
432. For an AC transformer and DC rectifier are welder having a time rating of one hour, the supply conductors shall NOT be less than _____ percent of its rated primary nameplate current.
A. 90
B. 80
C. 75
D. 85
Answer: Option C
Solution:
433. Refers to the power plant mounted on wheels as used in the railroad transportation industry.
A. Electric locomotive
B. Electric train
C. LRT
D. None of these
Answer: Option A
Solution:
434. If the terminal of the equipment grounding conductor is not visible, the conductor entrance hole shall be marked with the word _____.
A. green
B. white
C. gray
D. black
Answer: Option A
Solution:
435. Type NMC (non-metallic sheathed cable) shall have an outer covering which have the following characteristics. Which one is NOT included?
A. flame retardant
B. moisture resistant
C. corrosion resistant
D. none of these
Answer: Option D
Solution:
436. RME Board April 1996
Power and control tray cables (type TC) maybe used under one of the following conditions. Which one is this?
A. Where exposed to physical damage
B. Where installed as open cable on brackets
C. Where installed in industrial establishment where a registered master electrician will service the installation
D. Where direct buried underground
Answer: Option C
Solution:
437. Where rear access is required to work on de-energized parts on the back of the enclosed equipment, a minimum working space of horizontally shall be provided.
A. 1,000 mm
B. 900 mm
C. 800 mm
D. 600 mm
Answer: Option C
Solution:
438. A one family dwelling unit shall have a disconnecting means of at least _____ where the initial computed load is 10 kVA or more.
A. 60 A
B. 90 A
C. 100 A
D. 30 A
Answer: Option A
Solution:
439. Large batteries are those connected to a charging device with an output of more than _____.
A. 1.0 kW
B. 1.5 kW
C. 2.0 kW
D. 2.5 kW
Answer: Option C
Solution:
440. Which component of a DC motor is used to control the speed?
A. Carbon brush assembly
B. Armature winding
C. Commutator
D. Field winding
Answer: Option D
Solution:
441. Switches used in watercrafts, shall be capable of breaking and making safely a load current equal to _____ of their rated current at the rated voltage.
A. 100%
B. 130%
C. 125%
D. 150%
Answer: Option D
Solution:
442. A wiring method using knobs, tubes and flexible nonmetallic tubing for the protection and support and single insulated conductors concealed in hollow spaces of walls and ceilings of buildings.
A. Open wiring on insulators
B. Open wiring with knobs, tubes, etc.
C. Concealed knob and tube wiring
D. Knob and tube wiring
Answer: Option C
Solution:
443. The ampacity of the branch circuit conductors and the rating or setting of over-current protective devices supplying fixed electric space heating equipment consisting of resistance elements with or without a motor shall NOT be less than _____ of the total load of the motors and the heaters.
A. 125%
B. 130%
C. 115%
D. None of these
Answer: Option A
Solution:
444. A repulsion motor equipped with one of the following. Which one of this?
A. A set of slip rings
B. A commutator
C. Both commutator and slip ring
D. Neither a commutator nor a slip ring
Answer: Option C
Solution:
445. Communication conductors shall have a vertical clearance of NOT less than _____ from all points of roofs above, which they pass.
A. 2,500 mm
B. 2,000 mm
C. 2,400 mm
D. 2,200 mm
Answer: Option C
Solution:
446. A luminous discharge due to ionization of the air surrounding a conductor caused by a voltage gradient exceeding a certain critical value.
A. Corona
B. Skin effect
C. Johnson’s effect
D. Surge
Answer: Option A
Solution:
447. Branch circuit that supplies a number of outlets for lighting and appliance.
A. Multi-purpose branch circuit
B. Special branch circuit
C. Individual branch circuit
D. General purpose branch circuit
Answer: Option D
Solution:
448. The minimum number of branch circuits shall be determined from the _____.
A. total computed load and the size of disconnected needed
B. total computed load and the rating of the circuits used
C. size or rating of the circuits by the PEC
D. minimum number required by the PEC
Answer: Option B
Solution:
449. The insulated conductor of type TC (cable tray) cable shall be in sizes _____ through _____ copper.
A. 0.75 mm2, 500 mm2
B. 0.75 mm2, 300 mm2
C. 1.25 mm2 500 mm2
D. 1.25 mm2, 300 mm2
Answer: Option A
Solution:
450. A motor-generator arc welder has a 70 % duty cycle, the supply conductors shall NOT be less than _____ of its rated primary nameplate current.
A. 86%
B. 80%
C. 84%
D. 88%
Answer: Option A
Solution:
⇒ MCQ in Philippine Electrical Code (PEC) Part 10 | REE Board Exam
Questions and Answers in Philippine Electrical Code
Following is the list of practice exam test questions in this brand new series:
P inoyBIX educates thousands of reviewers and students a day in preparation for their board examinations. Also provides professionals with materials for their lectures and practice exams. Help me go forward with the same spirit.
“Will you subscribe today via YOUTUBE?”