BARC EE : Full Syllabus Test - 14

Consider following parameter for moving coil of meter:

1. No. of turns = 200

2. Length of coil = 10 × 10^–3 m

3. Depth of coil = 40 × 10^–3 m

4. Radial flux density under which coil is placed = 40 × 10^–3 Tesla

5. Current carried by coil = 50 × 10^–3 A

Torque on coil will be _________ μN-m.

If the excitation of a 3-phase alternator operating on infinite bus bars is changed, which one of the following shall alter?

When cathode is positive with respect to anode in an SCR, the number of blocked p-n junctions is

The common-emitter current gain of the transistor is β = 75 . The voltage V_BE in ON state is 0.7 V. Find the value of VEC .

Consider a CRO screen showing voltage waveform having vertical attenuator of 0.5 volt/div.

Peak to peak amplitude of voltage waveform is ________V.

For a signal x(t) = u(t + 2) – 2u(t) + u(t – 2) the waveform is:

In the given circuit shown in figure, SCR is fired at 45°. Load voltage and current at   will be:

Statement I: The correct sequence of stages in data acquisition system is sensor, A/D convertor and signal conditioning.

Statement II: DAS typically convert analog waveforms into digital values for processing.

In the amplifier circuit shown in figure , the transistor has g_m=0.4 A/V & β = 100. The lower cut off frequency due to C₁ is _________.

In the transmission network shown, the steady state transmission limit is 10 p.u. If a small fault occurs and respective C.B opens, then new steady state transmission limit is

In a Q–meter, when capacitance is changed to 3 μF it resonates at 1 kHz and at capacitance 5 μF it resonates at 1 kHz and 0.8 kHz. What is the value of test capacitance?

If the stiffness coefficient of a synchronous machine is positive, then the system is: