* What is the SI unit of electrical resistance?
* a) Ohm
* b) Volt
* c) Ampere
* d) Watt
* Which of the following is a passive element?
* a) Transistor
* b) Diode
* c) Resistor
* d) Op-amp
* Ohm's law states that:
* a) Current is directly proportional to voltage.
* b) Voltage is inversely proportional to current.
* c) Power is directly proportional to voltage squared.
* d) Power is inversely proportional to current squared.
* The unit of electrical power is:
* a) Watt
* b) Volt
* c) Ampere
* d) Coulomb
* A device that converts electrical energy into mechanical energy is called a:
* a) Generator
* b) Motor
* c) Transformer
* d) Diode
Circuit Analysis
* In a series circuit, the current flowing through each component is:
* a) Different
* b) Same
* c) Zero
* d) Infinite
* In a parallel circuit, the voltage across each component is:
* a) Different
* b) Same
* c) Zero
* d) Infinite
* Kirchhoff's Current Law (KCL) states that:
* a) The algebraic sum of currents entering a node is zero.
* b) The algebraic sum of voltages around a closed loop is zero.
* c) The voltage across a resistor is directly proportional to the current through it.
* d) The power dissipated in a resistor is equal to the square of the current times the resistance.
* Kirchhoff's Voltage Law (KVL) states that:
* a) The algebraic sum of currents entering a node is zero.
* b) The algebraic sum of voltages around a closed loop is zero.
* c) The voltage across a resistor is directly proportional to the current through it.
* d) The power dissipated in a resistor is equal to the square of the current times the resistance.
* The time constant of an RC circuit is:
* a) RC
* b) 1/RC
* c) R/C
* d) C/R
AC Circuits
* The phase difference between voltage and current in a purely inductive circuit is:
* a) 0 degrees
* b) 45 degrees
* c) 90 degrees
* d) 180 degrees
* The power factor of a purely resistive circuit is:
* a) 0
* b) 0.5
* c) 1
* d) -1
* The resonant frequency of a series RLC circuit is:
* a) 1/(LC)
* b) 1/(2πLC)
* c) 1/(√LC)
* d) 1/(2π√LC)
* The quality factor of a series RLC circuit is a measure of:
* a) The bandwidth of the circuit
* b) The phase shift between voltage and current
* c) The power dissipation in the circuit
* d) The resonant frequency of the circuit
* A transformer works on the principle of:
* a) Mutual induction
* b) Self-induction
* c) Electromagnetic induction
* d) Electrostatic induction
Network Theorems
* Thevenin's theorem states that any linear network can be replaced by:
* a) A single current source and a parallel resistor
* b) A single voltage source and a series resistor
* c) Two current sources in parallel
* d) Two voltage sources in series
* Norton's theorem states that any linear network can be replaced by:
* a) A single current source and a parallel resistor
* b) A single voltage source and a series resistor
* c) Two current sources in parallel
* d) Two voltage sources in series
* Superposition theorem is applicable to:
* a) Linear networks only
* b) Non-linear networks only
* c) Both linear and non-linear networks
* d) None of the above
* Maximum power transfer theorem states that maximum power is transferred to the load when:
* a) Load resistance is equal to source resistance
* b) Load resistance is greater than source resistance
* c) Load resistance is less than source resistance
* d) Load resistance is zero
* Millman's theorem is used to find the equivalent:
* a) Voltage source of parallel voltage sources
* b) Current source of parallel current sources
* c) Resistance of series resistors
* d) Inductance of series inductors
Transients and Steady State Analysis
* The time constant of an RL circuit is:
* a) L/R
* b) R/L
* c) RL
* d) 1/RL
* In a series RL circuit, the current through the inductor:
* a) Leads the voltage by 90 degrees
* b) Lags the voltage by 90 degrees
* c) Is in phase with the voltage
* d) Is 180 degrees out of phase with the voltage
* In a series RC circuit, the voltage across the capacitor:
* a) Leads the current by 90 degrees
* b) Lags the current by 90 degrees
* c) Is in phase with the current
* d) Is 180 degrees out of phase with the current
* The steady-state response of a circuit is the response that:
* a) Occurs immediately after the application of an input
* b) Occurs after a long time, when all transients have died down
* c) Occurs only for a short duration
* d) Occurs periodically
* The transient response of a circuit is the response that:
* a) Occurs immediately after the application of an input
* b) Occurs after a long time, when all transients have died down
* c) Occurs only for a short duration
* d) Occurs periodically
Network Theorems and Analysis Techniques
* Thevenin's theorem is used to simplify a circuit to an equivalent circuit consisting of:
* a) A single voltage source and a series resistor
* b) A single current source and a parallel resistor
* c) Two voltage sources in series
* d) Two current sources in parallel
* Norton's theorem is used to simplify a circuit to an equivalent circuit consisting of:
* a) A single voltage source and a series resistor
* b) A single current source and a parallel resistor
* c) Two voltage sources in series
* d) Two current sources in parallel
* Superposition theorem is applicable to:
* a) Linear circuits only
* b) Non-linear circuits only
* c) Both linear and non-linear circuits
* d) None of the above
* Maximum power transfer theorem states that maximum power is transferred to the load when:
* a) Load resistance is equal to source resistance
* b) Load resistance is greater than source resistance
* c) Load resistance is less than source resistance
* d) Load resistance is zero
* Millman's theorem is used to find the equivalent:
* a) Voltage source of parallel voltage sources
* b) Current source of parallel current sources
* c) Resistance of series resistors
* d) Inductance of series inductors
AC Circuit Analysis
* The impedance of a series RL circuit is:
* a) R + jωL
* b) R - jωL
* c) 1/(R + jωL)
* d) 1/(R - jωL)
* The impedance of a series RC circuit is:
* a) R + jωC
* b) R - jωC
* c) 1/(R + jωC)
* d) 1/(R - jωC)
* The power factor of a circuit with an impedance of 10 + j10 ohms is:
* a) 0.707
* b) 0.866
* c) 1
* d) 0.5
* The resonant frequency of a series RLC circuit is:
* a) 1/(LC)
* b) 1/(2πLC)
* c) 1/(√LC)
* d) 1/(2π√LC)
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