ISRO EE Quiz 14

There are two coherent generating units in a station.

Unit 1 500MVA, 11KV, 50Hz, 4 pole, H = 10 MJ/MVA

Unit 2 200MVA, 11KV,50Hz, 4 pole, H = 5 MJ/MVA

If the combined Swing equation on 100MVA base is,

The value of Heq is

A 3-ϕ dual converter operating in the circulating current mode has the following data: supply voltage V_LL = 440 V, f = 50 Hz, α₁ = 45°. The value of current limiting reactor L = 20 mH. Find the peak value of circulating current?

An oscilloscope input impedance consists of 1 MΩ resistance connected in parallel with a 100 pF capacitor. A compensated 20:1 attenuator is obtained by connecting a parallel combination of

An op-amp with CMRR = 10⁴ and differential gain = 10⁴, then the common mode gain in dB is

Master slave flip-flop consists of_____ J-K flip-flops.

The frequency at which conduction current density and displacement current density are equal in a medium with σ = 5 x 10^–5 S/m is & ε_r = 1