MCQ(s) of Elements of Electrical Engineering(2110005) - Winter 2014 Sem-1

• Q. 1  The electrical force or pressure that causes the electrons to move in a particular direction is called as the ______________
• (A) Magneto motive force
(B) Electromotive force
• (C) Electrostatic force
(D) Electromagnetic force
• (B) Electromotive force
• Q. 2  The charge on each electron is _____________ coulomb.
• (A) 1.9 × 10-19
(B) 1.6 × 10-19
• (C) 1.9 × 10-16
(D) 1.6× 10-16
• (B) 1.6 × 10-19
• Q. 3  The unit of resistivity is ________
• (A) $\Omega$/m
(B) $\Omega$-m
• (C) m/ $\Omega$
(D) $\Omega$-m -1
• (B) $\Omega$-m
• Q. 4  Coulomb’s second law is called as ______ law.
• (A) Inverse square
(B) Charge
• (C) Induction
• (A) Inverse square
• Q. 5  The magnetic lines of force are known as lines of ___________
• (A) magnetic flux
(B) Electromagnetism
• (C) Magnetic field
• (A) magnetic flux
• Q. 6  Magnetic flux density is measured in _____________
• (A) wb
(B) m2/wb
• (C) wb/m2
(D) Tesla/m2
• (C) wb/m2
• Q. 7  The correct relation between the three permeability’s is ___
• (A) µr0 µ
(B) µ0= µ µr
• (C) µ= µ0 µr
(D) µr= µ/ µ0
• (C) µ= µ0 µr
• Q. 8  Multimeter can be used to measure
• (A) current
(B) voltage
• (C) resistance
(D) all of the above
• (D) all of the above
• Q. 9  Measuring range of voltmeter can be extended by using
• (A) high shunt resistance
(B) high series resistance
• (C) low shunt resistance
(D) low series resistance
• (B) high series resistance
• Q. 10  Full name of ELCB is
• (A) Earth leakage circuit breaker
(B) Earth less circuit breaker
• (C) Earth loser circuit breaker
(D) Earth leakage circuit broker
• (A) Earth leakage circuit breaker
• Q. 11  Ammeter always connected is ________ in a circuit.
• (A) Parallel
(B) series
• (C) both (a) & (b)
(D) none of the above
• (B) series
• Q. 12  Which of the following insulation is used in cables?
• (A) Rubber
(B) Paper
• (C) Porcelain
(D) any of the above
• (D) any of the above
• Q. 13  Blinking of a fluorescent tube may be due to
• (A) low circuit voltage
(B) low ballast rating
• (C) low temperature
(D) any of the above
• (D) any of the above
• Q. 14  The LED is usually made of materials like
• (A) GaAs
(B) C and Si
• (C) GeAs
(D) None of the above
• (A) GaAs
• Q. 15  An alternating quantity is defined as the one which changes its _____________ as well as __________ with respect to time.
• (A) Value, direction
(B) Phase, polarity
• (C) Value, phase
• (A) Value, direction
• Q. 16  The ac voltage generators are called as _______
• (A) Alternator
(B) Induction generators
• (C) alternating generator
• (A) Alternator
• Q. 17  The maximum value of an ac quantity is called as its ___
• (A) Amplitude
(B) Peak to peak value
• (C) Rms value
• (A) Amplitude
• Q. 18  Rms value is also called as __________________ of ac current
• (A) Light producing component
(B) heat producing component
• (C) Useful component
(D) Useless component
• (B) heat producing component
• Q. 19  Peak value of sinusoidal waveform is equal to ___________
• (A) 0.637 ×Vaverage
(B) 0.637 Vrms
• (C) 0.707 Vrms
(D) 1.414 Vrms
• (D) 1.414 Vrms
• Q. 20  Filament material used in fluorescent tube is made up of ____
• (A) Nicron
(B) copper
• (C) tungsten
(D) aluminum
• (C) tungsten
• Q. 21  Complete the formula: 1 radian =_________________degrees
• (A) $\mathrm{\pi }$/180
(B) 180/$\mathrm{\pi }$
• (C) $\mathrm{\pi }$/360
(D) 360/$\mathrm{\pi }$
• (B) 180/$\mathrm{\pi }$