The unit protection scheme provides

1.	The unit protection scheme provides
A.	primary protection
B.	back up protection
C.	simultaneous protection
D.	remote protection
Answer» B. back up protection

Discussion

No Comment Found

Related MCQs

A power system has two synchronous generators. The governor-turbine characteristics orresponding to the generators are P1 = 50(50 ), P2 = 100(51 ). where f denotes the system frequency in Hz and P1 and P2 are respectively, the power outputs (in MW) of turbines 1 and 2. Assuming the generat or s and transmission network to be lossless, the system frequency for a total load of 400 MW is __________ Hz
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]. Assertion: Fast decoupled load flow method gives approximate load flow solution because it uses several assumptions. Reason: Accuracy depends on the power mismatch vector tolerance.
The fuel cost functions of two powr plants are Plant P1 : C1 = 0.05 Pg 1 + APg1 + B Plant P2 : C2 = 0.10 Pg 2 + APg2 + 2B Where, Pg1 and Pg2 are the generated powers of two plants, and A and B are the constants. If the two plants optimally share 1000 MW load at increamental fuel cost of 100 Rs/MWh, the ratio of load shared by plants P1 and P2 is
If a 75 MVA, 10 kV synchronous generator has Xd = 0.4 p.u, then Xd value (in p.u.) to a base of 100 MVA, 11 kV is ___________
In a long transmission line with r, l, g and c are the resistance, inductance, shunt conductance and capacitance per unit length, respectively, the condition for distortionless transmission is
A cable has following characteristics: L = 0.201 H/m and C = 196.2 p/F/m. The velocity of wave propagation through the cable is ________ m/s
When a line-to-ground fault occurs, the current in the phase is 100 A. The zero sequence current in this case will be _______ A
A three phase 50 Hz line consists of three conductors each of diameter 21 mm. The spacing between the conductors as follows: A B = 3m, B C = 5m, C A = 3.6 m If the line operates at 132 kV, the reactive voltampere generatd by the line per km is _______kVAr
If the sheath resistance is 2.14 /km and that of the conduct or is 0.1625 /k m, and mutual inductance of the shealth is 3.13 10 7 H/m. When the cable is 2 km long and supply is 50 Hz, the ratio of sheath loss to core loss of the cable will be_______
A 50 Hz alternator is rated 500 MVA, 20 kV, with Xd = 1.0 per unit and X"d = 0.2 per unit. It supplies a purely resistive load of 400 MW at 20 kV. The load is connected directly across the generator terminals when a symmetrical fault occurs at the load terminals. The initial rms current in the generator in per unit is __________

The unit protection scheme provides

Discussion

No Comment Found

Related MCQs

Reply to Comment