Q1. The number of electrons in the outer most orbit of carbon atom is
(A) 2
(B) 4
(C) 6
(D) 8

Q2. Electric current passing through the circuit produces
(A) luminous effect
(B) magnetic effect
(C) thermal effect
(D) chemical effect

Q3. According to Kirchhoffs voltage law, the algebraic sum of all IR drops and EMFs in any closed loop of a network is always
(A) zero
(B) negative
(C) positive
(D) determined by EMFs

Q4. Voltage dependent resistors are used
(A) for inductive circuits
(B) as current stabilizers
(C) to supress surges
(D) as heating elements

Q5. For testing appliances, the wattage of test lamp should be
(A) low
(B) high
(C) very low
(D) any value

Q6. Nichrome wire is an alloy of
(A) lead and zinc
(B) nickel and chromium
(C) chromium and Gold
(D) copper and silver

Q7. Two lamps 100 W and 60 W are connected in series across 230 V (alternating). Which of the following statement is correct?
(A) 60 W lamp will glow brighter
(B) 100 W lamp will glow brighter
(C) Both lamps will equally bright
(D) None of these

Q8. Another name of Electric pressure
(A) current
(B) voltage
(C) power
(D) energy

Q9. The efficiency of a transformer will be maximum when
(A) copper losses = iron losses
(B) copper losses = hysteresis losses
(C) hysteresis losses = eddy current losses
(D) eddy current losses = copper losses

Q10. A transformer transforms
(A) current
(B) voltage
(C) power
(D) frequency

Q11. Application of Nortons theorem to a circuit gives
(A) equivalent impedance
(B) equivalent current source and impedance in parallel
(C) equivalent current source and impedance in series
(D) equivalent current source

Q12. A field line and an equipotential surface are
(A) inclined at any angle
(B) always at 90°
(C) always parallel
(D) None of these

Q13. Which of the following is a bilateral element?
(A) Capacitance
(B) current source
(C) voltage source
(D) None of these

Q14. Which of the following is the passive element?
(A) Capacitance
(B) current source
(C) voltage source
(D) All of the above

Q15. A closed path made by several branches of the network is known as
(A) branch
(B) loop
(C) junction
(D) circuit

Q16. With rise in temperature the resistance of pure metals:
(A) decreases
(B) remains constant
(C) increases
(D) first decreases and then increases

Q17. Which of the following statement is true both for a series and a parallel D.C. circuit?
(A) Currents are additive
(B) Power are additive
(C) Voltages are additive
(D) None of these

Q18. Two resistors are said to be connected in series when
(A) same current passes through them
(B) different current passes through them
(C) Both are correct
(D) None of these

Q19. An electric filament bulb can be worked from:
(A) DC supply only
(B) AC supply only
(C) Battery supply only
(D) All are correct

Q20. The resistance of a conductor varies inversely with
(A) temperature
(B) area of cross-section
(C) length
(D) resistivity

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