ITI Electronics MCQ's Protection Devices with PDF

ITI Electronics MCQ's Protection Devices with PDF

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1.

What is the fusing factor of rewireable HRC fuse?

A : 1

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B : 1.1

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C : 1.2

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D : 1.5

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2.

What is the current rating of cartridge fuse used for domestic wiring?

A : 1250 Ampere

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B : 1350 Ampere

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C : 1450 Ampere

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D : 1550 Ampere

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3.

What is the full form of the abbreviation ELCB used in Electrical circuit?

A : Earth Lead Circuit Breakers

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B : Electrical Live Contact Breakers

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C : Equipment Load Circuit Breakers

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D : Earth Leakage Circuit Breakers

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4.

Which series MCB is used for protection of motor?

A : ‘L’ series MCBs

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B : ‘F’ series MCBs

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C : ‘G’ series MCBs

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D : ‘DC’ series MCBs

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5.

What is the breaking capacitor of a DC series MCB?

A : 6 kA

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B : 8 kA

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C : 10 kA

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D : 12 kA

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6.

What is the maximum voltage rating for ‘DC’ series MCBs?

A : 110 VDC

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B : 220 VDC

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C : 415 VDC

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D : 440 VDC

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7.

What is the maximum current rating for 4 pole MCB?

A : 50 A

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B : 60 A

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C : 70 A

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D : 80 A

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8.

Which device is used in electrical installations to protect from electric shock?

A : MCB

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B : MCCB

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C : ELCB

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D : Insulator

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9.

What is the current rating of copper colour fuse cartridge?

A : 25 ampere

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B : 35 ampere

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C : 50 ampere

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D : 63 ampere

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10.

What is the current rating of cartridge fuse with brown colour code?

A : 1A

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B : 2A

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C : 4A

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D : 5A

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