Single line diagram of which of the following power system is possible?
a) Power system with LG fault
b) Balanced power system
c) Power system with LL fault
d) Power system with LLG fault
Q.2.
A power system will have greater flexibility of operation if they have __________
a) Only Base load plants operating in combination
b) Various types of power plants operating in combination
c) Only Peak load plants operating in combination
d) Only thermal power plants operating in combination
Q.3.
Single line diagram does not represents:
a) Ratings of machines
b) Neutral wire of transmission lines
c) Delta connection of transformer winding
d) Star connection of transformer winding
Q.4.
In impedance diagram different power system elements are represented by symbols.
a) False
b) True
Q.5.
In combined operation of several power plants the reserve capacity requirement is reduced.
a) False
b) True
Q.6.
For a given power system, its zero and maximum regulation will occur at the impedance angle of
a) 45
b) 60
c) 35
d) 50
Q.7.
Abus power system hasPQ bus. For achieving a load flow solution by N-R in polar coordinates, the minimum number of simultaneous equation to be solved is ___________
a) 359
b) 334
c) 357
d) 345
Q.8.
Abus power system Ybus hassparsity. The total number of transmission lines will be ___________
a) 225
b) 563
c) 345
d) 456
Q.9.
The given graph is the depiction of ________ on a large power system network.
a) Three phase motor getting short
b) L-G fault
c) Ratings of machines
d) Any of the mentioned
Q.10.
A protection system engineer is planning to provide the complete protection, he can achieve this by ___________
a) a two phase fault relays and three earth fault relays
b) a two phase fault relays and two earth fault relays
c) two phase fault relays and three earth fault relays
d) three phase fault relays and two earth fault relays
Q.11.
A power system has a maximum load ofMW. Annual load factor is 50%. The reserve capacity of plant is _____ if the plant capacity factor is 40%.
a) 3.75 MW
b) 7.75 MW
c) 46.75 MW
d) 8.75 MW
Q.12.
The area under the load curve represents ____________
a) maximum demand
b) load factor
c) the average load on power system
d) number of units generated
Q.13.
If all the sequence voltages at the fault point in a power system are equal, then fault is __________
a) LLG fault
b) Line to Line fault
c) Three phase to ground fault
d) LG fault
Q.14.
If the power system network is at Vs∠δ and receiving end voltage is Vr∠0 consisting of the impedance of TL as (R+j5)Ω. For maximum power transfer to the load, the most appropriate value of resistance R should be __________
a) 1.732
b) 3.45
c) 5.2
d) 0.33
Q.15.
Voltage regulation in the power system is __________
a) dip in voltage at sending end
b) rise in voltage at sending end
c) rise in voltage at receiving end
d) dip in voltage at receiving end
Q.16.
Which of the following is not neglected during formation of reactance diagram from impedance diagram?
a) Shunt component of Transformers
b) Static loads
c) Resistance of various power system components
d) Reactance of alternators
Q.17.
Which of the following is not a requirement for site selection of hydroelectric power plant?
a) Large catchment area
b) Rocky land
c) Sedimentation
d) Availability of water
Q.18.
Which of the following is not an advantage of hydroelectric power plant?
a) no fuel requirement
b) continuous power source
c) low running cost
d) no standby losses
Q.19.
Which of the following element of hydroelectric power plant prevents the penstock from water hammer phenomenon?
a) Surge Tank
b) Draft tubes
c) Spillway
d) Valves and Gates
Q.20.
Which of the following part of thermal power plant causes maximum energy losses?
a) Alternator
b) Ash and unburnt carbon
c) Boiler
d) Condenser
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.