BARC EE : Full Syllabus Test -2

In the Below system, the magnitude of the fault current (in p.u.) supplied by generator G₁, if a 3-ϕ fault occurs at 11 KV bus bar. Consider the system is under No-load condition and the Base MVA is 15MVA.

G₁: 10 MVA, 11KV, X_d^’’ = 12 %

G₂: 15 MVA, 11KV, X_d^’’ = 10 %

T₁: 8 MVA, 11 KV/66 KV, X = 8 %

T₂: 10MVA, 66KV/11 KV, X = 10 %

An LTI system has step response (1 – e^–t) u(t). The response for the following input, x(t) at t = 2 is

In the 3-phase inverter, the load is balanced and gating scheme is 120° conduction mode. All the switches are ideal. If the DC source voltage is 400 V. The power consumed by 3-phase load. Load consists of resistance only having resistance of 30 Ω/phase. [Delta connected].

The impulse response of an initially relaxed linear system is e^-2tu(t). To produce a response of te^-2tu(t). The input must be equal to

For High head and low discharge the water turbine used is

The Y-bus matrix of 100 bus interconnected system having 80% sparse. Calculate the number of transmission lines in the system.

The value of diversity factor is

Which of the following statements about root locus technique is/ are correct?

1) This method is used for analysing transient as well as steady state response.

2) This method can handle more than one variable at a time.

3) Root locus is symmetrical about real axis in s-plane and moves away from real axis at breakaway points.

In a wattmeter both the coils are non-inductive and have resistances 0.02Ω and 2000Ω. The load current is 20A and voltage across load is 150V. If potential coil is connected near load then the error in reading is

Open loop transfer function of unity negative feedback system is . The closed loop system is

A 4 KVA, 400/200V, 1-phase transformer has leakage impedance of 0.02 + j0.04 per unit. The leakage impedance in Ohm when referred to HV side.

The root locus of a unity feedback system,  will intersect jω axis at s = ±j√α. The value of α is

In the circuit shown below when the current through galvanometer is zero, the battery current will be:

A unity feedback closed loop system has the loop transfer function G(s) =. The system becomes stable for the range.

For the circuit shown in the figure below, determine the steady state voltage across 3 Ω resistor and steady state current across it?