What is the primary function of a circuit breaker in a power system?
Q.82Medium
The stability of a power system depends on which of the following factors?
Q.83Easy
Which of the following is NOT a renewable energy source integrated into the Indian grid?
Q.84Easy
What is the standard frequency of the Indian power grid?
Q.85Easy
In a power system, the angle between voltage and current phasors is known as:
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Q.86Medium
The per-unit (p.u.) system in power systems is used primarily to:
Q.87Medium
Which protective relay is used for phase-to-phase fault detection in transmission lines?
Q.88Medium
A synchronous motor operating at no-load consumes:
Q.89Medium
The reactive power generated by an over-excited synchronous generator is:
Q.90Medium
What is the primary cause of voltage instability in a power system?
Q.91Hard
The swing equation of a synchronous machine is given by: 2H(d²δ/dt²) = Pm - Pe - D(dδ/dt). What does H represent?
Q.92Easy
In India's 2024-25 grid, which state has the highest installed renewable energy capacity?
Q.93Hard
The critical clearing angle (δcr) in transient stability analysis represents:
Q.94Medium
Power system harmonics in Indian grids are primarily caused by:
Q.95Hard
The fault level (short-circuit capacity) at a bus is determined by:
Q.96Medium
In load flow analysis, which bus type is used to specify active power and voltage magnitude?
Q.97Hard
The maximum power transfer in an AC transmission system occurs when the sending and receiving end voltages are:
Q.98Medium
Which of the following is a measure of power quality as per Indian Standards (IS 16001:2017)?
Q.99Medium
In a three-phase power system with balanced conditions, the zero-sequence current flows through:
Q.100Easy
In a 400 kV transmission line in India's western grid, if the series reactance is 0.35 Ω/km and the line length is 250 km, what is the total series reactance of the transmission line?
