BARC Full Syllabus Test for ESE & GATE EC Exams

Question 1

A BJT is biased with a power supply of 12V. For minimum heat dissipation, the drop across the transistor will be.

Question 2

If a linear time invariant system is excited by a true random signal like white noise, the output of the linear system will have which of the following properties?

Question 3

A power amplifier with a gain of 100 has an output of 12 V at 1.5 kHz along with a second harmonic content of 25 percent. A negative feedback is to be provided to reduce the harmonic content of the output to 2.5 percent. What should be the gain of the feedback path and the level of signal input to the overall system, respectively?

Question 4

The spectrum of a band pass signal spans from 20 kHz to 30 kHz. The signal can be recovered ideally from the sampled values when the sampling rate is at least:

Question 5

What is the transfer function of a phase lead compensator? The values of

are given as

Question 6

An Op-amp has the following open loop parameter

,

The low frequency system input and output impedances, when closed loop gain is set to 100, are.

Question 7

In a digital communication system employing Frequency Shift Keying (FSK), the 0 and 1 bit are represented by sine waves of 10 kHz and 25 kHz respectively. If number of bits are 6 then these waveforms will be orthogonal for a bit interval of

Question 8

The circuit diagram of a controller is given in figure. What type of controller is this?

Question 9

A 10 bit A/D converter is used in a DMM. The maximum peak to ripple voltage allowed in the dc supply voltage for a measurement range of 0 to 5 V is.

Question 10

Consider the following circuit :

Which one of the following gives the function implemented by the MUX- based digital circuit?

Question 11

Two coils X and Y are placed in a circuit such that a current changes by 2A in coil X and the magnetic flux change of 0.4 Wb occurs in coil Y. The mutual inductance between the coils is

Question 12

For a R-C series circuit if the power commend by the resistance is 500 W at 100V. If the input supply is 220 V, 50Hz is applied to the circuit, then find out the value of Resistance R & capacitance C?

Question 13

The use of the Thermocouple meters for AC measurement leads to a meter-scale which is _____________.

Question 14

Two lossy capacitors with equal capacitance values and power factors of 0.01 and 0.02 are in parallel, and the combination is supplied from a sinusoidal voltage source. The power factor of the combination is

Question 15

The electric field from 'b' to 'c' will be ______.