Basic Electrical Engineering objective questions (mcq) and answers


46.  For testing appliances, the wattage of test lamp should be


   A. Very low

   B. Low

   C. High

   D. Any value


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C. High

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47.  In the case of direct current


   A. Magnitude and direction of current remains constant

   B. Magnitude and direction of current changes with time

   C. Magnitude of current changes with time

   D. Magnitude of current remains constant


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A. Magnitude and direction of current remains constant

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48.  Voltage dependent resistors are used


   A. For inductive circuits

   B. To suppress surges

   C. An heating elements

   D. As current stabilizers


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B. To suppress surges

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49.  Which of the following could be the value of resistivity of copper ?


   A. 1.72 × 10-4 Ω-m

   B. 1.72 × 10-9 Ω-m

   C. 1.72 × 10-6 Ω-m

   D. 1.72 × 10-8 Ω-m


✔ View Answer


D. 1.72 × 10-8 Ω-m

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50.  Specific resistance of a substance is measured in


   A. Ω/m

   B. Ω/m2

   C. Ω-m

   D. m/Ω


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C. Ω-m

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