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Latest SAIL Management Trainee Exam Question (Objective Questions), MCQ in English

Subjects : Electrical Engineering, Quantitative Aptitude, Reasoning, Verbal Ability, General Awareness

Question Bank SAIL Management Trainee Exam (Electrical Engineering ) - English
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Electrical Engineering

Question 1Single Answer
What does Ohm’s Law state?
  1. A
    Voltage is proportional to current and resistance
  2. B
    Power is equal to voltage times current
  3. C
    Resistance is proportional to current and voltage
  4. D
    Voltage is inversely proportional to current and resistance
Question 2Single Answer
The total resistance in a series circuit with three resistors of 2Ω, 3Ω, and 4Ω is:
  1. A
    9Ω
  2. B
    2Ω
  3. C
    3Ω
  4. D
    1Ω
Question 3Single Answer
According to Ohm’s law, if the voltage across a 5Ω resistor is 10V, the current through it will be:
  1. A
    1A
  2. B
    2A
  3. C
    5A
  4. D
    10A
Question 4Single Answer
Which of the following is the unit of electric power?
  1. A
    Ampere
  2. B
    Watt
  3. C
    Volt
  4. D
    Ohm
Question 5Single Answer
Kirchhoff’s Current Law (KCL) states that the sum of currents entering a junction is eual to:
  1. A
    The sum of currents leaving the junction
  2. B
    Zero
  3. C
    The resistance at the junction
  4. D
    The total voltage at the junction
Question 6Single Answer
Kirchhoff’s Voltage Law (KVL) states that the sum of the electrical potential differences around any closed loop is eual to:
  1. A
    Zero
  2. B
    The sum of the currents
  3. C
    The total resistance
  4. D
    The voltage of the source
Question 7Single Answer
The total resistance in a parallel circuit with resistors 4Ω, 6Ω, and 12Ω is:
  1. A
    2Ω
  2. B
    4Ω
  3. C
    6Ω
  4. D
    8Ω
Question 8Single Answer
Which of the following is true for an ideal voltage source?
  1. A
    Voltage varies with the load
  2. B
    It maintains constant voltage across any load
  3. C
    It has no internal resistance
  4. D
    Voltage is inversely proportional to current
Question 9Single Answer
The energy dissipated in a resistor is given by the formula:
  1. A
    E = I² R
  2. B
    E = V² / R
  3. C
    E = V × I × t
  4. D
    All of the above
Question 10Single Answer
Which of the following is a statement of the Superposition Theorem?
  1. A
    The total response in a linear network with multiple sources is the sum of the responses to each source acting individually.
  2. B
    The current in each branch of a circuit is the same.
  3. C
    The voltage across the network is constant for all resistors.
  4. D
    Power is conserved in a closed circuit.
Question 11Single Answer
Thevenin’s Theorem is used to simplify complex circuits by replacing the part of the circuit with:
  1. A
    A series voltage source and a resistor
  2. B
    A parallel voltage source and a resistor
  3. C
    A single current source
  4. D
    A single resistance
Question 12Single Answer
Norton’s Theorem is the dual of which other theorem?
  1. A
    Thevenin’s Theorem
  2. B
    Ohm’s Law
  3. C
    Kirchhoff’s Law
  4. D
    Faraday’s Law
Question 13Single Answer
The transient response of an RLC circuit is determined by its:
  1. A
    Inductive reactance
  2. B
    Time constant
  3. C
    Capacitance only
  4. D
    Resistance only
Question 14Single Answer
The frequency-domain analysis of circuits is used to study circuits that have:
  1. A
    DC only
  2. B
    Steady-state responses only
  3. C
    AC signals
  4. D
    Both DC and AC signals
Question 15Single Answer
The Laplace Transform is used to convert time-domain signals into the frequency domain because it:
  1. A
    Makes solving differential equations easier
  2. B
    Eliminates the need for numerical analysis
  3. C
    Only works with sinusoidal signals
  4. D
    Helps in calculating power
Question 16Single Answer
In an RLC circuit, the transient response depends on the:
  1. A
    Resistance, inductance, and frequency
  2. B
    Voltage supply only
  3. C
    Inductance and capacitance only
  4. D
    Capacitance and frequency only
Question 17Single Answer
The time constant of an RC circuit is given by the formula:
  1. A
    τ = R / L
  2. B
    τ = L / R
  3. C
    τ = R × C
  4. D
    τ = C / R
Question 18Single Answer
In a 3-phase system, the total power is given by the formula:
  1. A
    P = V × I
  2. B
    P = √3 × V × I × cos(θ)
  3. C
    P = V × I × cos(θ)
  4. D
    P = V × I × sin(θ)
Question 19Single Answer
The apparent power in an AC circuit is measured in:
  1. A
    Volt-amperes (VA)
  2. B
    Watts (W)
  3. C
    Joules (J)
  4. D
    Ohms (Ω)
Question 20Single Answer
In the frequency domain, a series resonance circuit has a:
  1. A
    High impedance at resonance
  2. B
    Low impedance at resonance
  3. C
    No impedance at resonance
  4. D
    Voltage drop at resonance
Question 21Single Answer
The transient response in an RLC circuit decays to zero after a time proportional to the:
  1. A
    Inductance and capacitance values
  2. B
    Voltage amplitude
  3. C
    Resistance and capacitance values
  4. D
    Resistance and inductance values
Question 22Single Answer
In a parallel circuit, when resistors are combined, the overall resistance will always be:
  1. A
    Greater than any of the individual resistances
  2. B
    Equal to the sum of all resistances
  3. C
    Less than the smallest resistor in the circuit
  4. D
    Independent of the number of resistors in the circuit
Question 23Single Answer
The impedance of a series RLC circuit at resonance is:
  1. A
    Zero
  2. B
    Inductive
  3. C
    Capacitive
  4. D
    Resistive
Question 24Single Answer
Which of the following is a characteristic of a purely inductive circuit?
  1. A
    The voltage leads the current by 90°
  2. B
    The current leads the voltage by 90°
  3. C
    Voltage and current are in phase
  4. D
    Power factor is 1
Question 25Single Answer
The power factor of an inductive circuit is:
  1. A
    1
  2. B
    Zero
  3. C
    Negative
  4. D
    Less than 1
Question 26Single Answer
What is the primary purpose of Kirchhoff's Current Law (KCL)?
  1. A
    To ensure conservation of charge at a node
  2. B
    To calculate voltage drops
  3. C
    To determine power dissipation
  4. D
    To analyze resonance
Question 27Single Answer
In a circuit with three resistors in series, each of 5 Ω, what is the equivalent resistance?
  1. A
    5 Ω
  2. B
    15 Ω
  3. C
    67 Ω
  4. D
    10 Ω
Question 28Single Answer
What is the voltage across a 10 Ω resistor carrying a current of 2 A?
  1. A
    5 V
  2. B
    10 V
  3. C
    20 V
  4. D
    40 V
Question 29Single Answer
Which analysis technique uses loop currents as variables to solve a circuit?
  1. A
    Nodal analysis
  2. B
    Mesh analysis
  3. C
    Superposition theorem
  4. D
    Thevenin’s theorem
Question 30Single Answer
The Superposition theorem is applicable to:
  1. A
    Non-linear circuits
  2. B
    Linear bilateral circuits
  3. C
    Unilateral circuits
  4. D
    Time-varying circuits
Question 31Single Answer
Thevenin’s theorem converts a complex circuit into:
  1. A
    A single current source and parallel resistance
  2. B
    A single resistor
  3. C
    A single voltage source and series resistance
  4. D
    A single capacitor
Question 32Single Answer
For maximum power transfer, the load resistance should be:
  1. A
    Half of the source resistance
  2. B
    Equal to the source resistance
  3. C
    Twice the source resistance
  4. D
    Zero
Question 33Single Answer
Norton’s theorem is the dual of:
  1. A
    Thevenin’s theorem
  2. B
    Superposition theorem
  3. C
    Millman’s theorem
  4. D
    Reciprocity theorem
Question 34Single Answer
Millman’s theorem is used to find:
  1. A
    Equivalent resistance
  2. B
    Current through a resistor
  3. C
    Voltage across parallel branches
  4. D
    Power dissipation
Question 35Single Answer
Tellegen’s theorem is based on:
  1. A
    Conservation of energy
  2. B
    Conservation of charge
  3. C
    Maximum power transfer
  4. D
    Resonance
Question 36Single Answer
In graph theory, a tree of a network graph contains:
  1. A
    All nodes and some branches
  2. B
    All branches and some nodes
  3. C
    Only loops
  4. D
    Only capacitors
Question 37Single Answer
The rank of an incidence matrix for a graph with n nodes is:
  1. A
    n
  2. B
    n - 1
  3. C
    n + 1
  4. D
    2n
Question 38Single Answer
A cut-set in a network graph includes:
  1. A
    All branches of the graph
  2. B
    Only resistors
  3. C
    Branches that disconnect the graph when removed
  4. D
    Only loops
Question 39Single Answer
The tie-set matrix is associated with:
  1. A
    Nodes
  2. B
    Loops
  3. C
    Cut-sets
  4. D
    Resistors
Question 40Single Answer
The number of fundamental loops in a graph with b branches, n nodes, and t twigs is:
  1. A
    b - n + 1
  2. B
    n - 1
  3. C
    b - t
  4. D
    t - n
Question 41Single Answer
The coefficient of coupling (k) in a coupled circuit is always:
  1. A
    Greater than 1
  2. B
    Equal to 0
  3. C
    Less than or equal to 1
  4. D
    Negative
Question 42Single Answer
In the dot convention, if current enters the dotted end of one coil, the induced voltage in the other coil is:
  1. A
    Positive at the dotted end
  2. B
    Negative at the dotted end
  3. C
    Zero
  4. D
    Infinite
Question 43Single Answer
Mutual inductance (M) between two coils depends on:
  1. A
    Resistance of the coils
  2. B
    Physical orientation and number of turns
  3. C
    Capacitance of the circuit
  4. D
    Frequency of the source
Question 44Single Answer
For two coupled coils with L1 = 4 H, L2 = 9 H, and M = 6 H, the coefficient of coupling is:
  1. A
    5
  2. B
    0
  3. C
    67
  4. D
    0
Question 45Single Answer
A transformer is an example of:
  1. A
    A resistive circuit
  2. B
    A coupled circuit
  3. C
    A capacitive circuit
  4. D
    A unilateral circuit
Question 46Single Answer
In a series RLC circuit, resonance occurs when:
  1. A
    XL = XC
  2. B
    R = XL
  3. C
    XC = R
  4. D
    XL = 0
Question 47Single Answer
The quality factor (Q) of a series RLC circuit is given by:
  1. A
    R / (Lω)
  2. B
    ωL / R
  3. C
    R / C
  4. D
    C / L
Question 48Single Answer
At resonance, the power factor of a series RLC circuit is:
  1. A
    Zero
  2. B
    Unity
  3. C
    5
  4. D
    Infinite
Question 49Single Answer
The bandwidth of a series RLC circuit is:
  1. A
    ω0 / Q
  2. B
    Q / ω0
  3. C
    R / L
  4. D
    L / R
Question 50Single Answer
In a parallel RLC circuit, resonance occurs when:
  1. A
    Admittance is minimum
  2. B
    Impedance is minimum
  3. C
    Current is maximum
  4. D
    Voltage is minimum
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