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1. Concept of Basic Electrical and Electronics Engineering

1. What does Ohm’s law state?

2. Which of the following is a unit of power?

3. The SI unit of electric charge is:

4. Which material is a good conductor?

5. Kirchhoff’s Voltage Law (KVL) is based on:

6. Kirchhoff’s Current Law (KCL) is based on:

7. A circuit with only resistors is called:

8. What is the equivalent resistance of two 10Ω resistors in parallel?

9. Which circuit allows current to flow in only one direction?

10. Delta to star conversion formula for resistance is:

11. The superposition theorem applies to:

12. Thevenin’s theorem states that any linear circuit can be reduced to:

13. Norton’s theorem converts a circuit into:

14. Maximum power transfer occurs when:

15. Resonance in AC circuits occurs when:

16. What is the frequency of standard AC supply in Nepal?

17. RMS value of a sine wave with peak value 100V is:

18. The phase difference between line and phase voltage in a three-phase system is:

19. A semiconductor is a material with:

20. In a P-N junction diode, current flows when:

21. The primary function of a BJT is:

22. CMOS is preferred over MOSFET because of:

23. Which oscillator is used for high stability?

24. Which component determines the frequency in an LC oscillator?

25. The primary purpose of an oscillator is to:

26. Class A amplifiers operate for:

27. Class B amplifiers are primarily used for:

28. Op-Amps are primarily used for:

29. What is the SI unit of electrical resistance?

30. Which of the following materials is an insulator?

31. A bilateral circuit allows current to flow in:

32. A passive circuit does not contain:

33. What is the main purpose of a fuse in an electrical circuit?

34. In a star-delta transformation, how many resistances are involved?

35. Which network theorem is used to analyze circuits with multiple independent sources?

36. The Thevenin equivalent resistance is found by:

37. What happens at resonance in an RLC circuit?

38. Active power in an AC circuit is measured in:

39. What is the main advantage of three-phase power over single-phase power?

40. Which waveform has equal positive and negative half cycles?

41. What is the relationship between peak and RMS voltage in an AC circuit?

42. In a semiconductor, increasing temperature generally:

43. What type of doping creates an N-type semiconductor?

44. The breakdown voltage of a Zener diode is used for:

45. Which biasing technique is most stable for a BJT?

46. What is the main advantage of MOSFETs over BJTs?

47. CMOS technology is widely used in:

48. A crystal oscillator is used for:

49. Which oscillator uses an inductor-capacitor network?

50. The main function of an amplifier is to:

51. A Class AB amplifier is a compromise between:

52. Push-pull amplifier circuits are used to:

53. Op-Amps are used for:

54. What is the SI unit of electric current?

55. What does an electric current produce around a conductor?

56. What is the reciprocal of resistance?

57. Which of the following is an active component?

58. Which material is commonly used for electrical wiring?

59. What is the main characteristic of an ideal voltage source?

60. Which law states that the sum of voltages around a closed loop is zero?

61. The sum of currents at a junction in a circuit must be:

62. What is the primary function of a capacitor?

63. In a star-delta conversion, which parameter remains the same?

64. A unilateral circuit allows current flow in:

65. In Thevenin’s theorem, the equivalent circuit consists of:

66. The unit of reactive power is:

67. Which theorem is useful for finding maximum power transfer?

68. What happens in an AC circuit at resonance?

69. In a purely resistive AC circuit, the power factor is:

70. What is the phase difference between voltage and current in a purely inductive circuit?

71. What is the shape of an AC waveform in a standard power system?

72. Which device converts AC to DC?

73. In an NPN transistor, current flows from:

74. What is the main purpose of a Zener diode?

75. Which semiconductor device is used in high-speed switching applications?

76. CMOS technology is preferred for digital circuits because of:

77. A signal generator is used to:

78. What type of oscillator is used in radio transmission?

79. Which type of amplifier operates for 50% of the input cycle?

80. The main function of an op-amp is:

81. In a push-pull amplifier, distortion is minimized by:

82. What is the SI unit of capacitance?

83. Which type of circuit allows multiple paths for current flow?

84. What does an inductor primarily store?

85. Which of the following is an example of a bilateral circuit?

86. What is the unit of conductance?

87. What does a transformer primarily change?

88. What happens to total resistance when more resistors are added in parallel?

89. What is the purpose of a relay in an electrical circuit?

90. Which theorem helps to simplify complex AC circuits?

91. What happens when an AC circuit reaches resonance?

92. What is the phase angle difference in a purely capacitive AC circuit?

93. In an RL circuit, the time constant is given by:

94. Which of the following is NOT a passive component?

95. What does a MOSFET primarily control?

96. Which type of diode is used in voltage regulation?

97. In a PNP transistor, the emitter is:

98. Which material is commonly used in semiconductor manufacturing?

99. What is the primary function of an oscillator?

100. Which oscillator uses a quartz crystal for frequency stability?

101. What is the function of a push-pull amplifier?

102. Which amplifier class provides the highest efficiency?

103. The ideal gain of an op-amp in an open-loop configuration is:

104. What is the primary function of a power amplifier?

105. A tuned amplifier is mainly used for:

106. Which transistor configuration provides the highest voltage gain?

107. Which component is used to generate high-frequency oscillations?

108. In a Wien bridge oscillator, which component determines the frequency?

109. A rectifier converts:

110. A ripple factor is associated with:

111. What does a resistor do in a circuit?

112. The unit of inductance is:

113. Which material is a good insulator?

114. What is the primary function of an electrical fuse?

115. In a series circuit, the total resistance is:

116. What happens to the total capacitance when capacitors are connected in series?

117. Kirchhoff’s Current Law (KCL) states that:

118. Thevenin’s theorem is used to:

119. Which theorem replaces a complex circuit with an equivalent current source?

120. The power factor of a purely resistive circuit is:

121. What is the frequency of standard AC power in most countries?

122. The average value of a full-wave rectified sine wave is:

123. A three-phase system is preferred over a single-phase system because:

124. In an AC circuit, the phase difference between current and voltage in a purely capacitive circuit is:

125. The breakdown voltage of a Zener diode is mainly used for:

126. In a transistor, the current gain in a common emitter configuration is represented by:

127. A MOSFET is primarily used for:

128. Which of the following has the lowest power consumption?

129. The purpose of an oscillator in electronics is to:

130. Which oscillator is most suitable for high-frequency applications?

131. Which amplifier has the highest efficiency?

132. A push-pull amplifier is mainly used to:

133. Which component is widely used for audio amplification?

134. A differential amplifier is mainly used for:

135. What is the main advantage of using an op-amp?

136. A tuned amplifier is used for:

137. In a Wien bridge oscillator, which element determines frequency?

138. The ripple factor is associated with:

139. A transformer works on the principle of: