Electrical & Electronics Engineering

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Q. In a transfer function, what does a pole represent?
  • A. A point of zero output.
  • B. A frequency where the system is stable.
  • C. A frequency where the system response goes to infinity.
  • D. A point of maximum gain.
Q. In a transfer function, what does a zero represent?
  • A. A point where the output is zero for a non-zero input.
  • B. A point of instability.
  • C. A point where the system is stable.
  • D. A point of maximum gain.
Q. In a transformer, what does the term 'turns ratio' refer to?
  • A. The ratio of primary to secondary voltage
  • B. The ratio of primary to secondary current
  • C. The ratio of primary to secondary turns
  • D. The ratio of power input to output
Q. In a transformer, what does the turns ratio determine?
  • A. The efficiency of the transformer
  • B. The voltage transformation
  • C. The current rating
  • D. The core material
Q. In a transmission line, what does the term 'surge impedance' refer to?
  • A. The resistance to current flow
  • B. The characteristic impedance of the line
  • C. The maximum voltage the line can handle
  • D. The power factor of the line
Q. In an AC circuit, if the impedance is 5Ω and the current is 2A, what is the voltage across the circuit?
  • A. 10V
  • B. 5V
  • C. 2.5V
  • D. 1V
Q. In an AC circuit, if the voltage is given as V(t) = 100√2 sin(ωt), what is the RMS voltage?
  • A. 100 V
  • B. 70.71 V
  • C. 141.42 V
  • D. 50 V
Q. In an AC circuit, if the voltage is given as V(t) = 10sin(100t), what is the peak voltage?
  • A. 10V
  • B. 5V
  • C. 7.07V
  • D. 0V
Q. In an AC circuit, what does impedance represent?
  • A. The total opposition to current flow
  • B. The total voltage in the circuit
  • C. The total power consumed
  • D. The total current flowing
Q. In an AC circuit, what does the impedance (Z) represent?
  • A. Total opposition to current flow
  • B. Only resistance
  • C. Only reactance
  • D. Voltage drop
Q. In an AC circuit, what does the term 'impedance' refer to?
  • A. Resistance only
  • B. Total opposition to current
  • C. Voltage drop
  • D. Current flow
Q. In an AC circuit, what is the impedance of a circuit with a resistor of 4Ω and an inductor with a reactance of 3Ω?
  • A.
  • B.
  • C.
  • D. 12Ω
Q. In an AC circuit, what is the impedance of a circuit with a resistor of 5Ω and an inductor with a reactance of 3Ω?
  • A.
  • B.
  • C.
  • D. 15Ω
Q. In an AC circuit, what is the phase difference between voltage and current in a purely resistive load?
  • A. 0 degrees
  • B. 90 degrees
  • C. 180 degrees
  • D. 270 degrees
Q. In an AC circuit, what is the phase difference between voltage and current in a purely resistive circuit?
  • A. 0 degrees
  • B. 90 degrees
  • C. 180 degrees
  • D. 270 degrees
Q. In an AC circuit, what is the power factor?
  • A. Ratio of real power to apparent power
  • B. Ratio of reactive power to real power
  • C. Total power consumed
  • D. Voltage divided by current
Q. In an inverting amplifier configuration, if the feedback resistor is 10 kOhm and the input resistor is 1 kOhm, what is the gain?
  • A. -10
  • B. -1
  • C. 1
  • D. 10
Q. In an inverting amplifier configuration, if the feedback resistor is 10k ohms and the input resistor is 1k ohm, what is the gain?
  • A. -10
  • B. -1
  • C. 10
  • D. 1
Q. In an inverting amplifier configuration, if the feedback resistor is 10kΩ and the input resistor is 1kΩ, what is the gain?
  • A. -10
  • B. -1
  • C. 10
  • D. 1
Q. In an operational amplifier, what is the purpose of negative feedback?
  • A. To increase gain
  • B. To stabilize the output
  • C. To reduce distortion
  • D. To increase bandwidth
Q. In control systems, what does the term 'stability' refer to?
  • A. The ability to maintain a constant output.
  • B. The ability to return to equilibrium after a disturbance.
  • C. The speed of the system's response.
  • D. The accuracy of the system's output.
Q. In hydroelectric power generation, what is the role of the dam?
  • A. To store water
  • B. To generate steam
  • C. To cool the generator
  • D. To convert AC to DC
Q. In load flow analysis, what does the term 'slack bus' refer to?
  • A. A bus with zero load
  • B. A bus that maintains system frequency
  • C. A bus that compensates for losses in the system
  • D. A bus with the highest voltage
Q. In load flow studies, what is the significance of transformer tap changing?
  • A. It affects the power factor
  • B. It adjusts the voltage levels
  • C. It increases the load capacity
  • D. It reduces losses
Q. In modulation, what does the term 'carrier signal' refer to?
  • A. The original message signal
  • B. The signal used to carry the information
  • C. The noise in the system
  • D. The output signal after modulation
Q. In power distribution, what does the term 'feeder' refer to?
  • A. A type of transformer
  • B. A line that carries electricity from substations to consumers
  • C. A protective device
  • D. A method of load flow analysis
Q. In power distribution, what is the purpose of a distribution transformer?
  • A. To generate electricity
  • B. To step down voltage for consumer use
  • C. To store energy
  • D. To convert AC to DC
Q. In root locus analysis, what does the location of poles indicate?
  • A. The system's output.
  • B. The stability of the system.
  • C. The input signal.
  • D. The transfer function.
Q. In root locus analysis, what does the root locus plot indicate?
  • A. The stability of the system as gain varies.
  • B. The time response of the system.
  • C. The transfer function of the system.
  • D. The frequency response of the system.
Q. In root locus analysis, what does the root locus plot represent?
  • A. The path of the system poles as gain varies.
  • B. The frequency response of the system.
  • C. The time response of the system.
  • D. The steady-state error of the system.
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