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UNIT-11 MCQ: Inspection

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About this collection

CompEx questions are organised into topic-based sets including Ex d, Ex e, Ex n and intrinsic safety. Select a subject to study at your own pace or complete a timed practice attempt.

“CompEx — UNIT-11 MCQ: Inspection” contains 14 questions across 1 collection.

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Sample questions and answers

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A visual inspection is defined as an inspection which?

One correct answer

  • Is carried out prior to equipment being brought into service
  • Is carried out on some of the equipment
  • Identifies defects apparent to the eye without using tools or ladders✓ Correct answer
  • Includes those aspects covered by a close inspection and which also identifies those defects only identifiable by opening the enclosure
The "grade" of inspection required prior to an installation being brought into service is?

One correct answer

  • Detailed✓ Correct answer
  • Close
  • Visual
  • Sample
Where a hazardous area has not been declared gas-free, live working (under PTW) may be authorised if:

One correct answer

  • The work is on an IS circuit✓ Correct answer
  • The work to be done is inside an EEx d enclosure
  • Safety gloves are worn
  • The equipment is supplied from a 'separated extra low voltage' (SELV) transformer
A "close" inspection of an IS installation would reveal that?

One correct answer

  • Electrical connections are tight
  • Cable screens are earthed as per documentation
  • The installation is clearly labelled ???????✓ Correct answer
  • There are no unauthorised modifications
Before opening electrical equipment in an hazardous area installation supplied from a remote switch room, which one of the following is minimum isolation requirement?

One correct answer

  • Open and disconnect the phase and neutral conductors in a double pole isolator, close and lock in the off position
  • Remove line conductor fuse, close and lock fuse box
  • Switch off the relevant contactor
  • Lock an on-load double pole (phase& neutral) isolator in the off position✓ Correct answer

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