EEE - 1030234210 - GENERATION TRANSMISSION AND DISTRIBUTION

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1030234210 - GENERATION TRANSMISSION AND DISTRIBUTION

PART – A ( ONE MARKS )

1.      The primary fuel used in thermal power stations is:
a)  Coal
b) Diesel
c) Natural gas
d) Biomass

2.      What does the Plant Use Factor represent in power plants?
 a) The ratio of the actual energy produced to the total energy that could have been produced
b) The ratio of the total capacity of the plant to the actual energy produced
c) The amount of energy lost in transmission
d) The efficiency of converting fuel into electricity

3.      Hydroelectric power plants convert:
 a) Potential energy to electrical energy
b) Thermal to mechanical
c) Solar to thermal
d) Mechanical to potential

 

4.      What is the primary advantage of a Grid or Interconnected System in power generation?
a) It increases the overall cost of electricity generation

b) It allows for sharing of power among different plants, improving reliability
c) It makes the transmission lines more vulnerable to failure
d) It reduces the efficiency of power plants

 

5.      In a transmission line, the skin effect is prominent at:
 a) High frequency
b) Low voltage
c) DC supply
d) Short length

 

6.      Corona loss in transmission lines increases with:
 a) Increased voltage
b) Decreased humidity
c) Smooth conductors
d) Low frequency

7.      Transmission efficiency is maximum when:
a) Sending end power = Receiving end power

b) Voltage drop is zero
c) Losses are maximum
d) Power factor is zero

8.      The sag in a transmission line primarily depends on:
 a) Conductor material
b) Transmission voltage

c) Tension in the conductor and the span length
d) Frequency of the transmitted signal

9.      Which of the following is a key advantage of HVDC transmission over AC transmission?
 a) Higher efficiency at long distances
b) Reduced need for synchronization between grids
c) Simple construction
d) Lower installation cost

10.  In HVDC transmission, what does the bipolar configuration refer to?
a) A single DC line with a ground return

b) Two DC lines with opposite polarities
c) Multiple AC lines connected to one DC link
d) A single converter station with both AC and DC outputs

 

11.  What is the primary function of a STATCOM (Static Synchronous Compensator) in FACTS systems?
a) To increase the system voltage
b) To reduce harmonic distortion

c) To provide reactive power compensation
d) To convert AC to DC power

 

12.  Which of the following FACTS controllers is capable of controlling both reactive power and active power flow?
a) SVS
b) STATCOM

 c) UPFC
d) SVC

13.  Which of the following is a common material used for manufacturing line insulators?
a) Steel
b) Rubber

c) Porcelain
d) Copper

14.  The string efficiency of suspension insulator strings can be improved by:
a) Increasing the number of insulators
b) Using longer insulator strings

 c) Grading the insulators
d) Increasing the voltage rating of the insulators

15.  Which of the following is a characteristic of screened cables?
a) Insulation is made of paper only

b) Conductors are completely enclosed in a metallic screen
c) The cable is primarily used for low voltage applications
d) It does not require any outer sheath for protection

16.  In a three-core underground cable, the cores are typically arranged:
a) In parallel to each other with a common sheath

b) In a triangular arrangement with an individual sheath for each core
c) In a coaxial arrangement
d) In a straight line with no individual sheath

17.  Which of the following is the primary advantage of underground distribution systems over overhead systems?
 a) Lower initial cost

b) Greater safety and aesthetics
c) Higher transmission efficiency
d) Easier to maintain and repair

18.  In an AC distribution system, which of the following is not a common type of connection scheme?
 a) Radial system
b) Ring main system
c) Interconnected system

d) Star-delta system

19.  Which type of substation typically has all its equipment installed inside a building?
a) Outdoor substation
b) Gas-insulated substation (GIS)

 c) Indoor substation
d) Hybrid substation

20.  Which of the following is a primary function of a bus bar in a substation?
a) To step up or step down the voltage
b) To provide electrical isolation

c) To connect multiple circuits together for power distribution
d) To filter harmonics in the power system