Top 7 MCQ on Electrical Conduits

Electrical Engineering MCQ presents the top 7 MCQ on fundamental concepts of Electrical conduits.

Electrical conduit is best defined as:

  1. A conductor which carries current
  2. A tube that is used to protect and route electrical wiring
  3. A signal cable that carries HF signal
  4. None of these

Correct answer: 2. A tube that is used to protect and route electrical wiring

Explanation: The electrical conduit is best defined as a tube that is used to protect and route electrical wiring

An electrical conduit can be made of:

  1. Metal
  2. Plastic
  3. Fiber
  4. All of these

Correct answer: 4. All of these

Statement: Non-metallic conduits are light-weight

Assertion: Non-metallic conduits have reduced installation labor cost as compared to metallic conductors

Which of the following statements is correct regarding the above statement and assertion:

  1. Both statement and assertion are correct
  2. Statment is correct, assertion is wrong
  3. Statement is wrong, assertion is correct
  4. Both are wrong

Correct answer: 1. Both statement and assertion are correct

The non-metallic conduits are lightweight as well as they have reduced installation cost

Which one of the following is heaviest:

  1. RMC
  2. EMT
  3. IMC
  4. All are equal

Correct answer: 1. RMC

RMC or Rigid metal conduit (RMC) is a thick-walled threaded tubing that is heaviest of all three. The other two being EMT (Electrical metallic tubing) and IMC (Intermediate metal conduit).

The most suitable conduit for embedded use:

  1. RMC
  2. EMT
  3. PVC
  4. Aluminum

Correct answer: 3. PVC

Explanation: The plastic material resists moisture and different corrosive substances thus making PVC conduits PVC the most suitable for embedded use

The routing of a cable coming out of box embedded in the actual ceiling and which is to be connected to the light fixture in the false ceiling is recommended using:

  1. PVC conduit
  2. GI
  3. EMT
  4. Flexible conduit

Correct answer: 4. Flexible conduit

The power distribution on a floor of residential complex requires 30 cables that are to fed 30 different rooms and having a common corridor. Which one of the following is the most economical method for routing through corridor area:

  1. Use a cable trunking
  2. Use 30 GI conduits
  3. Use EMT conduits
  4. Use 30 flexible conduits

Correct answer: 1. Cable trunking

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