Electrical & Electronics Engineering

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Q. In root locus analysis, what does the term 'breakaway point' refer to?
  • A. Point where the root locus starts
  • B. Point where the root locus ends
  • C. Point where the system becomes unstable
  • D. Point where multiple roots meet
Q. In semiconductor physics, what are 'holes'?
  • A. Negative charge carriers
  • B. Positive charge carriers
  • C. Neutral particles
  • D. Electrons in the conduction band
Q. In semiconductor physics, what is a 'hole'?
  • A. A negatively charged particle
  • B. A positively charged absence of an electron
  • C. A type of impurity
  • D. A defect in the crystal structure
Q. In semiconductor physics, what is the significance of the bandgap?
  • A. It determines the conductivity of the material
  • B. It defines the frequency of operation
  • C. It indicates the modulation depth
  • D. It affects the gain of the transistor
Q. In small-signal analysis of a BJT, what does the term 'r_pi' represent?
  • A. Base resistance
  • B. Emitter resistance
  • C. Collector resistance
  • D. Input resistance
Q. In small-signal analysis, what does the term 'small-signal model' refer to?
  • A. A model for large signals
  • B. A linear approximation of a nonlinear device
  • C. A model for digital signals
  • D. A model for high-frequency signals
Q. In small-signal analysis, what does the term 'transconductance' refer to?
  • A. The ratio of output voltage to input current
  • B. The ratio of output current to input voltage
  • C. The ratio of output current to input current
  • D. The ratio of input voltage to output voltage
Q. In small-signal models, what does the term 'r_pi' represent in a BJT?
  • A. The input resistance
  • B. The output resistance
  • C. The transconductance
  • D. The base-emitter voltage
Q. In small-signal models, what does the term 'r_pi' represent?
  • A. The input resistance of a BJT
  • B. The output resistance of a BJT
  • C. The transconductance of a BJT
  • D. The thermal voltage
Q. In small-signal models, what does the term 'transconductance' (gm) represent?
  • A. The ratio of output voltage to input current
  • B. The ratio of input voltage to output current
  • C. The ratio of output current to input voltage
  • D. The ratio of input current to output voltage
Q. In small-signal models, what does the term 'transconductance' refer to?
  • A. The ratio of output current to input voltage
  • B. The ratio of input current to output voltage
  • C. The gain of the amplifier
  • D. The resistance of the transistor
Q. In small-signal models, what does the transconductance (gm) represent?
  • A. The ratio of output current to input voltage
  • B. The ratio of input current to output voltage
  • C. The change in output current per change in input voltage
  • D. The change in input voltage per change in output current
Q. In small-signal models, which parameter represents the transconductance of a FET?
  • A. gm
  • B. r0
  • C. Vgs
  • D. Id
Q. In soil consolidation, what does the term 'primary consolidation' refer to?
  • A. Immediate settlement
  • B. Long-term settlement
  • C. Settlement due to drainage
  • D. Settlement due to loading
Q. In stability analysis, what does a Nyquist plot help determine?
  • A. The time response of the system.
  • B. The gain margin and phase margin.
  • C. The steady-state error.
  • D. The transfer function of the system.
Q. In stability analysis, what does a Nyquist plot represent?
  • A. The time response of a system.
  • B. The frequency response of a system.
  • C. The root locus of a system.
  • D. The transfer function of a system.
Q. In the context of FETs, what does 'Vgs' represent?
  • A. Gate-source voltage
  • B. Drain-source voltage
  • C. Gate-drain voltage
  • D. Source-drain voltage
Q. In the context of FETs, what does 'Vgs' stand for?
  • A. Gate-source voltage
  • B. Drain-source voltage
  • C. Gate-drain voltage
  • D. Source-drain voltage
Q. In transmission line analysis, what does the term 'load flow' refer to?
  • A. The flow of electrical load
  • B. The analysis of power distribution
  • C. The calculation of voltage and current in the system
  • D. The flow of reactive power
Q. In which application would you typically find a distribution transformer?
  • A. At power generation stations
  • B. In substations
  • C. In industrial plants
  • D. In residential areas
Q. In wind power generation, what is the main component that converts wind energy into mechanical energy?
  • A. Generator
  • B. Turbine
  • C. Inverter
  • D. Transformer
Q. Using KCL, if three currents enter a node: 5A, 3A, and 2A, what is the current leaving the node?
  • A. 0A
  • B. 2A
  • C. 3A
  • D. 10A
Q. Using KCL, if three currents entering a node are 2A, 3A, and 1A, what is the current leaving the node?
  • A. 6A
  • B. 4A
  • C. 3A
  • D. 2A
Q. Using KCL, if three currents entering a node are 5A, 3A, and 2A, what is the total current leaving the node?
  • A. 10A
  • B. 8A
  • C. 6A
  • D. 4A
Q. What does a Bode plot consist of?
  • A. Magnitude and phase plots.
  • B. Only magnitude plot.
  • C. Only phase plot.
  • D. Time response plot.
Q. What does a Bode plot represent?
  • A. The time response of a system.
  • B. The frequency response of a system.
  • C. The stability of a system.
  • D. The root locus of a system.
Q. What does a phase margin of less than 0 degrees indicate?
  • A. The system is stable.
  • B. The system is marginally stable.
  • C. The system is unstable.
  • D. The system has a high gain margin.
Q. What does a transfer function represent in control systems?
  • A. The relationship between input and output in the time domain.
  • B. The relationship between input and output in the frequency domain.
  • C. The physical layout of the system.
  • D. The stability of the system.
Q. What does a transfer function with poles in the right half of the s-plane indicate?
  • A. The system is stable.
  • B. The system is marginally stable.
  • C. The system is unstable.
  • D. The system is critically damped.
Q. What does KCL state about currents at a junction?
  • A. The sum of currents entering equals the sum of currents leaving
  • B. The sum of voltages equals zero
  • C. Current is constant in a closed loop
  • D. Power is conserved in a circuit
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