Management Trainee Electrical MCQs

Q11. LFC regulates:

• A) Bus voltages only
• B) Frequency and tie-line power flow
• C) Reactive power
• D) Generator terminal voltage

Q12. Capacitor bank at load is used to:

• A) Reduce transformer losses only
• B) Improve transmission stability
• C) Reduce line current and losses locally
• D) Eliminate harmonics

Q13. Increasing rotor resistance results in:

• A) Higher efficiency
• B) Lower torque
• C) Improved PF
• D) High starting torque

Q14. SF6 breaker advantage:

• A) Low dielectric strength
• B) Faster arc extinction and compact size
• C) High maintenance
• D) Low voltage only

Q15. Distance relay measures:

• A) Current
• B) Time
• C) Impedance
• D) Frequency

Q16. High switching frequency causes:

• A) Torque ripple
• B) Copper loss only
• C) Less harmonics but more switching losses
• D) No benefit

Q17. High rotor inertia helps in:

• A) Voltage regulation
• B) Copper loss reduction
• C) Transient stability
• D) Short-circuit current

Q18. CT open secondary causes:

• A) Heating
• B) High voltage
• C) Flux loss
• D) Accuracy loss

Q19. Bundle conductors reduce:

• A) Resistance
• B) Strength
• C) Corona loss
• D) Insulation

Q20. NOT required for synchronization:

• A) Equal voltage
• B) Same phase sequence
• C) Identical waveform
• D) Same frequency