MCQ(s) of Elements of Electrical Engineering (2110005) - Summer 2015 Sem-2

    • Q. 1  The material used for fuse should have
    • (A) low melting point & high conductivity
      (B) low melting point & low conductivity
    • (C) high melting point & high conductivity
      (D) high melting point & low conductivity
    • (B) low melting point & low conductivity
    • Q. 2  Earthing is necessary to
    • (A) avoid risk of fire due to earth leakage
      (B) avoid electric shock to human body
    • (C) both [a] & [b]
      (D) either [a] or [b]
    • (C) both [a] & [b]
    • Q. 3  MCB provides protection against
    • (A) short ckt
      (B) overload
    • (C) earth fault
      (D) all of the above
    • (B) overload
    • Q. 4  The choke in tube light wiring provides
    • (A) high current
      (B) high resistance
    • (C) high impulse voltage
      (D) low reactance
    • (C) high impulse voltage
    • Q. 5  Which type of capacitor is used generally in fan?
    • (A) ceramic
      (B) Electrolytic
    • (C) mica
      (D) none of above
    • (D) none of above
    • Q. 6  The meter used at our premises measure
    • (A) voltage
      (B) current
    • (C) power
      (D) energy
    • (D) energy
    • Q. 7  The frequency of DC supply is
    • (A) 50 Hz
      (B) 1 Hz
    • (C) 0 Hz
      (D) none of above
    • (C) 0 Hz
    • Q. 8  Measuring range of ammeter can be extended by using
    • (A) high value of series resistance
      (B) low value of shunt resistance
    • (C) low value of series resistance
      (D) high value of shunt resistance
    • (C) low value of series resistance
    • Q. 9  Full name of MCB is
    • (A) Miniature circuit breaker
      (B) Minimum circuit breaker
    • (C) Maximum circuit breaker
      (D) None of the above
    • (A) Miniature circuit breaker
    • Q. 10  Voltmeter always connected is _________ in a circuit.
    • (A) Parallel
      (B) series
    • (C) Both (a) & (b)
      (D) None of the above
    • (A) Parallel
    • Q. 11  Unit of magneto motive force (mmf) is
    • (A) Weber
      (B) AT
    • (C) Voltage
      (D) Tesla
    • (B) AT
    • Q. 12  Average value of a.c. voltage = _________× Vm
    • (A) 1.414
      (B) 0.707
    • (C) 0.637
      (D) 1.5
    • (C) 0.637
    • Q. 13  Unit of potential difference is
    • (A) voltamp
      (B) watt
    • (C) ampere
      (D) voltage
    • (D) voltage
    • Q. 14  Value of form factor(Kf) is
    • (A) 0.707
      (B) 1.414
    • (C) 0.637
      (D) 1.11
    • (D) 1.11
    • Q. 15  The unit of conductivity is
    • (A) Siemens / m
      (B) Siemens-m
    • (C) mho
      (D) mho-m
    • (A) Siemens / m
    • Q. 16  If relative permittivity is 5 , then it’s absolute permittivity is
    • (A) 5 / €0
      (B) 5 €0
    • (C) €0 / 5
      (D) 8.854 x 10 -12
    • (B) 5 €0
    • Q. 17  The unit of permeance is
    • (A) AT / Wb
      (B) Wb / AT
    • (C) Henry
      (D) either [b] or [c]
    • (B) Wb / AT
    • Q. 18  Q-factor of a coil means
    • (A) Higher voltage magnification
      (B) Higher selectivity of the tuning coil
    • (C) either [a] or [b]
      (D) both [a] and [b]
    • (A) Higher voltage magnification
    • Q. 19  For a series resonance condition of a AC circuit current is
    • (A) minimum
      (B) maximum
    • (C) zero
      (D) infinity
    • (B) maximum
    • Q. 20  For zero power factor load of 3-phase ckt.,if we measure the power by 2-wattmeter method then readings of wattmeters are
    • (A) one wattmeter shows zero reading
      (B) equal & +ve sign
    • (C) equal & opposite sign
      (D) both shows zero reading
    • (C) equal & opposite sign
    • Q. 21  The gas used in sodium vapour lamp is
    • (A) argon
      (B) nitrogen
    • (C) neon
      (D) methane
    • (C) neon