Which of the following is an application layer service?

Which of the following is linux operating system?

The relation between electric intensity E, voltage applied V and the distance d between the plates of a parallel plate condenser is

The relation between electric intensity E, voltage applied V and the distance d between the plates of a parallel plate condenser is given by:
V = E*L
E = V/L

Who started the daily newspaper 'National Herald' in 1938?

In a power network, 400 kV is recorded at a 415 kV bus. A 50 MVAR, 415 kV shunt reactor is connected to the bus. What is the reactive power absorbed by the shunt reactor?

The capacity of reactor = 50 MVAr when it is operated at 415 kV.
Impedance of reactor = V2/MVAr = (415*415)2/50 = 3444.5 Ω
For 400 kV,
Reactive power observed = (400*400)/3444.5
= 46.45 MVAR

Or

VAr capacity of capacitor or reactor is proportional to V²

A coil having an inductance of 100 mH is magnetically coupled to another coil having an inductance of 900 mH. The coefficient of coupling between the coils is 0.45. Calculate the equivalent inductance if the two coils are connected in series opposing.

M = k√(L₁L₂)
M= 0.45√(100*900)
M = 135 mH

L_eq for opposite connection of coils = L₁ + L₂ - 2M
L_eq = 900 + 100 - 2*135
L_eq = 730 mH