Q.1.
An isolated generator connected to a turbine with its continuous maximum power ofMW,Hz. Generator connected with two loads of 8 MW, each operate atHz.. Generator hasdroop characteristic. If an additional load of 6 MW is added then the change in the frequency will be ____________
- a) 0.25
- b) 0.75
- c) 0.5
- d) 1
Q.2.
For the given system the Ybus matrix is show below.
- d) None of the mentioned
Q.3.
If short TL is delivering a lagging power factor load, sending end p.f. would be ________
- a) (VrcosФr+IR)/Vs
- b) (VrcosФr+IRsinФr)/Vs
- c) (VrsinФr+IR)/Vs
- d) (VssinФr+IRcosФr)/Vs
Q.4.
If all the sequence voltages at the fault point in a power system are equal, then fault is __________
- a) LLG fault
- b) LG fault
- c) Three phase to ground fault
- d) Line to Line fault
Q.5.
The below mentioned graph is a recorded data of the voltage fluctuation of the network, then it can be concluded that these faults are __________
- a) L-G
- b) A three phase motor short
- c) Feeder fault
- d) Any of the mentioned
Q.6.
The inertia constant of two groups of machines which do not swing together are 4 andMJ/MVA, the equivalent inertia constant of the system is _________
- a) 2.85
- b) 14
- c) 6
- d) 12
Q.7.
A fault current ofpassing through the primary side of a 400/5 CT. On the secondary side an inverse time over current relay is connected whose current setting is 75%, the plug setting is __________
- a) 5
- b) 3.75
- c) 6
- d) 4
Q.8.
The three phase line is working atHz with conductors rearranged as shown. The Cph of TL atkV is ___________
- a) 8.75*10-9
- b) 8.75*10-12
- c) 26.2*10-12
- d) 26.2*10-9
Q.9.
For aMVA,kV three phase Alternator observes a three phase fault at terminals of it. If the fault current isA, the pu value of positive sequence reactance ______
- a) 2.62
- b) 0.46
- c) 1.31
- d) 0.92
Q.10.
A lossless TL having SIL ofMW is provided with uniform distributed series capacitance compensation ofand shunt compensation ofthen the SIL of compensated TL will be _______________
- a) 3949.9
- b) 3289
- c) 2784.9
- d) 2877.6
Q.11.
A lossless TL having SIL ofMW is provided with uniform distributed series capacitance compensation ofand shunt compensation ofthen the compensated impedance of TL will be(in pu) ____________
- a) 0.7595
- b) 2.88
- c) 0.647
- d) 3.27