Power Systems Multiple Choice Questions

Q1. Corona results in

better regulation

radio interference

power factor improvement

none of the above

Q2. In a three phase unbalanced, four wire star connected system, the current in the neutral wire is given as

zero

vector sum of the currents in the three lines

\(\sqrt{3}\) times the current in each phase

three time the current in individual phase

Q3. In a power system reactive power is necessary

for power transmission

for stabilizing voltage level

for stabilizing frequency

for counter acting the effect of reactance in the transmission system

Q4. What is Marshalling Kiosk in power transformer ?

It provides alarms, trip information, controls & indications from main transformer

it is the base on which the transformer rail is provided to place the transformer

It is the device for protection

none

Q5. When the power is to be transmitted over a distance of 500 km, the transmission voltage should be in the range

33 kV-66 KV

66 kV-110 kV

110 KV-150 KV

150 KV-220 kV

Q6. The total installed solar generation capacity in India at present is of the order of

10 GW

20 GW

30 GW

50 GW

Q7. What is the approximate installed generating capacity of Gujarat ?

15000 MW

10000 MW

20000MW

30000MW

Q8. Of the following choices, which best describes or defines geothermal energy ?

Heat energy from volcanic eruptions

Heat energy from hot Springs

Heat energy from inside the earth

Heat energy from rocks on earth’s surface

Q9. In distribution transformer efficiency is measured on the basis of

Energy

Power

Current

Voltage

Q10. Which of the following is not a function of the State Load Dispatch Center

Ensure quality power at rated voltage and frequency

Economical scheduling and dispatching of power produced by independent power projects

Formulating efficient tariff structures

Immediate restoration of power system after disturbance

MCQ

POWER SYSTEM