GTU Engineering 1st Year MCQ | Elements of Electrical Engineering-2110005 Summer 2015 Sem-2

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

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
- Answer
  
  (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]
- Answer
  
  (C) both [a] & [b]
- Q. 3 MCB provides protection against
- (A) short ckt
  
  (B) overload
- (C) earth fault
  
  (D) all of the above
- Answer
  
  (B) overload
- Q. 4 The choke in tube light wiring provides
- (A) high current
  
  (B) high resistance
- (C) high impulse voltage
  
  (D) low reactance
- Answer
  
  (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
- Answer
  
  (D) none of above
- Q. 6 The meter used at our premises measure
- (A) voltage
  
  (B) current
- (C) power
  
  (D) energy
- Answer
  
  (D) energy
- Q. 7 The frequency of DC supply is
- (A) 50 Hz
  
  (B) 1 Hz
- (C) 0 Hz
  
  (D) none of above
- Answer
  
  (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
- Answer
  
  (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
- Answer
  
  (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
- Answer
  
  (A) Parallel
- Q. 11 Unit of magneto motive force (mmf) is
- (A) Weber
  
  (B) AT
- (C) Voltage
  
  (D) Tesla
- Answer
  
  (B) AT
- Q. 12 Average value of a.c. voltage = _________× Vm
- (A) 1.414
  
  (B) 0.707
- (C) 0.637
  
  (D) 1.5
- Answer
  
  (C) 0.637
- Q. 13 Unit of potential difference is
- (A) voltamp
  
  (B) watt
- (C) ampere
  
  (D) voltage
- Answer
  
  (D) voltage
- Q. 14 Value of form factor(Kf) is
- (A) 0.707
  
  (B) 1.414
- (C) 0.637
  
  (D) 1.11
- Answer
  
  (D) 1.11
- Q. 15 The unit of conductivity is
- (A) Siemens / m
  
  (B) Siemens-m
- (C) mho
  
  (D) mho-m
- Answer
  
  (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
- Answer
  
  (B) 5 €₀
- Q. 17 The unit of permeance is
- (A) AT / Wb
  
  (B) Wb / AT
- (C) Henry
  
  (D) either [b] or [c]
- Answer
  
  (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]
- Answer
  
  (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
- Answer
  
  (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
- Answer
  
  (C) equal & opposite sign
- Q. 21 The gas used in sodium vapour lamp is
- (A) argon
  
  (B) nitrogen
- (C) neon
  
  (D) methane
- Answer
  
  (C) neon