Electrical Quiz MCQ - Set 02

Quiz Questions

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01. Which of the following is not a factor, which would affect the type of termination?

     (A) Circuit design current

     (B) Physical space around terminations

     (C) Presence of solid foreign bodies

     (D) Size of conductor

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02. When a voltmeter is connected in a circuit it is essential that it

     (A) Has a very low resistance

     (B) Has a very high resistance

     (C) Is connected in series with the supply

     (D) Is connected in series with the load

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03. Instruments should be regularly calibrated to

     (A) Support local industry

     (B) Ensure accuracy when testing

     (C) Ensure operative is up to date

     (D) Provide a training exercise for operatives

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04. Which of the following is a non-statutory document?

     (A) The New Roads and Street Works Act

     (B) The Electricity Safety, Quality, and Continuity Regulations 2002

     (C) BS 7671

     (D) The Electrical Equipment (Safety) Regulations

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05. Once a low-pressure mercury vapour lamp has lit, the purpose of the choke/ballast unit is to

     (A) Discharge voltage

     (B) Correct power factor

     (C) Suppress radio interference

     (D) Limit lamp current

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06. A 50 mm × 50 mm steel trunking has a tabulated space factor of 1037. If the tabulated factor for PVC cable having a cross sectional area of 6 mm sq. is 21.2, the maximum number of these cables that can be installed into the trunking is

     (A) 47

     (B) 48

     (C) 49

     (D) 50

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07. Balancing loads over three phases will reduce

     (A) Phase currents

     (B) Earth faults

     (C) Neutral currents

     (D) Overloads

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08. Which of the following is a statutory document applicable to operatives carrying out installation and maintenance of highway electrical equipment?

     (A) The Laying of Cables in Public Highways

     (B) H.S.E guidance H.S.G 47 (Avoiding danger from underground and overhead services)

     (C) The Personal Protective Equipment at Work Regulations

     (D) Electricity Association G39/1

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09. Which of the following lamps would not normally form part of a highway electrical system?

     (A) Low pressure mercury (T8-T12)

     (B) Low pressure mercury (MBF)

     (C) Metal halide (MBI)

     (D) Incandescent Lamp (100W)

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10. Electrostatic sensitive equipment, in transit, need not be protected against damage from

     (A) High temperature

     (B) Dust and fibers

     (C) Moisture ingress

     (D) Day light

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11. To ensure safe isolation, voltage indicating devices

     (A) Must comply with BS 7671

     (B) Are used to prove the circuit dead only

     (C) Are used to prove the circuit was alive only

     (D) Must be ‘proved’ prior to and ‘re-proved’ after isolation

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12. What degree of protection is specified for protection against a BS finger?

     (A) IP4XB

     (B) IP5XB

     (C) IP6XB

     (D) IPXXB

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13. If a motor is required to start against a large starting current, it is usual to use

     (A) Direct on line starter

     (B) Face plate starter

     (C) Step down centre tapped starter

     (D) Rotor resistance starter

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14. The purpose of a method statement is to

     (A) Ensure compliance with BS 7671

     (B) Identify a safe working practice

     (C) Provide a training document for staff

     (D) Provide instructions to be followed at all times

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15. One method of insulating windings is to use

     (A) Shellac

     (B) High reluctance silicon steel

     (C) Low frequency dust cores

     (D) PVC

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Set 01

Set 02

Set 03

Set 04

Set 05

Set 06

Set 07

Set 08

Set 09