Basic Electrical Engineering objective questions (mcq) and answers

41.  Two resistors are set to be connected in series when

   A. Same current passes in turn through body

   B. Both carry the same value of current

   C. Total current equals the sum of branch currents

   D. Some of I.R. drops equal the applied e.m.f.

42.  Varistors are

   A. Insulators

   B. Non-linear resisters

   C. Carbon resistors

   D. Resisters with zero temperature coefficient

43.  Insulating materials have the function of

   A. Preventing a short circuit between conducting wire

   B. Preventing an open circuit between the voltage source and the load

   C. Conducting very large currents

   D. Storing very high currents

44.  The minimum charge of an ion is

   A. Equal to the atomic number of the atom

   B. Equal to the charge of an electron

   C. Equal to the charge of the number of electrons in an atom

   D. Zero

45.  If the efficiency of a machine is to be high, what should be low?

   A. Input power

   B. Losses

   C. Ratio of output to input

   D. All of the above

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