Q. Which material is commonly used for making the arch of circuit breakers?

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Q. What is the medium in which arc is kept in BOCB (Bulk oil circuit breaker)?

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Q. What is the principal on which MCB (Miniature circuit breaker) works ?

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Q. What does “MCB” stand for?

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Q. Potential difference and EMF (Electro-motive force) are same.

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Q. What is the dielectric strength of Sulphur hexafluoride used in SF6 type circuit breaker?

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Q. Which is not a property of Sulphur hexafluoride?

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Q. SF6 circuit breakers are better than BOCB (Bulk oil circuit breaker).

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Q. What is the medium in which arc is kept in SF6 circuit breaker?

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Q. Which is a type of three phase brushless DC motor driver?

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Q. When was the first AC (Alternating current) induction motor invented?

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Q. Who invented first practical DC (direct current) motor?

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Q. Which is a type of single full H-Bridge motor driver IC (Integrated circuit)?

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Q. Which is a type of Triple Half-H-Bridge motor driver IC (Integrated circuit)?

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Q. Which is a type of dual H-bridge motor driver?

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Q. In ward leonard system of speed control we cannot achieve uniform acceleration of motors.

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Q. Which drive is also called as Line shaft drive?

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Q. Group drive has low power factor.

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Q. Induction motor works on the principle of faradays law of electromagnetic induction.

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Q. Which is the drive in which each machine has separate motors to drive?

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