Q1.
What is a power system?
Correct Answer:
B
A power system includes generation, transmission, and distribution of electrical energy.
Q3.
What is the function of transmission system?
Correct Answer:
B
Transmission system carries power from plants to substations.
Q5.
What is distribution system?
Correct Answer:
B
Distribution system supplies power to end users.
Q6.
What is substation?
Correct Answer:
B
Substations control and transform voltage levels.
Q7.
Which device steps up voltage?
Correct Answer:
B
Step-up transformer increases voltage for transmission.
Q8.
Which device steps down voltage?
Correct Answer:
B
Step-down transformer reduces voltage for distribution.
Q9.
What is load in power system?
Correct Answer:
B
Load is any device consuming electrical power.
Q10.
What is power factor?
Correct Answer:
A
Power factor indicates efficiency of power usage.
Q11.
What is ideal power factor?
Correct Answer:
C
Unity power factor is ideal for efficiency.
Q12.
What is real power?
Correct Answer:
B
Real power performs useful work.
Q13.
What is reactive power?
Correct Answer:
B
Reactive power does not perform real work.
Q14.
What is apparent power?
Correct Answer:
A
Apparent power is combination of real and reactive power.
Q16.
What is voltage regulation?
Correct Answer:
B
Voltage regulation measures voltage variation.
Q17.
What is efficiency of power system?
Correct Answer:
B
Efficiency is output power divided by input power.
Q18.
What is transmission line?
Correct Answer:
B
Transmission lines carry electricity.
Q20.
What is corona effect?
Correct Answer:
B
Corona is ionization of air around HV conductors.
Q21.
What is insulator?
Correct Answer:
B
Insulators prevent current leakage to ground.
Q22.
What is circuit breaker?
Correct Answer:
B
Circuit breaker protects system from faults.
Q23.
What is isolator?
Correct Answer:
B
Isolator operates under no-load conditions.
Q24.
What is earthing?
Correct Answer:
B
Earthing protects from electric shock.
Q25.
What is short circuit?
Correct Answer:
B
Short circuit is unintended low resistance path.
Q26.
What is overload?
Correct Answer:
B
Overload occurs when current exceeds limit.
Q27.
What is load shedding?
Correct Answer:
B
Load shedding manages demand shortage.
Q28.
What is smart grid?
Correct Answer:
B
Smart grid uses digital control and automation.
Q29.
What is power loss in transmission?
Correct Answer:
B
Losses occur due to conductor resistance.
Q30.
What is HVDC transmission?
Correct Answer:
B
HVDC is used for long distance efficient transmission.
Q31.
What is transformer?
Correct Answer:
B
Transformer changes voltage levels.
Q32.
What is step-up transformer?
Correct Answer:
B
Step-up transformer increases voltage.
Q33.
What is step-down transformer?
Correct Answer:
B
Step-down transformer reduces voltage.
Q34.
What is power system stability?
Correct Answer:
B
Stability means system remains in equilibrium.
Q35.
What is frequency stability?
Correct Answer:
B
Frequency stability keeps system at rated frequency.
Q36.
What is busbar?
Correct Answer:
B
Busbar distributes power in substations.
Q37.
What is distribution transformer?
Correct Answer:
B
It reduces voltage for consumer use.
Q38.
What is peak load?
Correct Answer:
B
Peak load is highest demand.
Q39.
What is base load?
Correct Answer:
B
Base load is continuous minimum demand.
Q40.
What is reliability in power system?
Correct Answer:
B
Reliability ensures uninterrupted supply.
