Fuse Multiple Choice Questions and Answers


1.  The primary function of a fuse is to


   A. Open the circuit

   B. Protect the appliance

   C. Protect the line

   D. Prevent excessive currents from flow through the circuit


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D. Prevent excessive currents from flow through the circuit

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2.  The fuse rating is expressed in terms of


   A. Current

   B. Voltage

   C. VAR

   D. KVA


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A. Current

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3.  if use is never inserted in


   A. Neutral wire

   B. Negative of DC circuit

   C. Positive of DC circuit

   D. Phase line


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A. Neutral wire

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4.  Fuses have got advantages of


   A. Cheapest type of protection

   B. Inverse time current characteristic

   C. No Maintenance

   D. Current limiting effect under short-circuit conditions

   E. All of the above


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E. All of the above

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5.  Protection by fuses is generally not used beyond


   A. 20 A

   B. 50 A

   C. 100 A

   D. 200 A


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C. 100 A

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