PGECET Question Bank

Hi I would like to have the sample questions for the PGECET Examination conducted which is required for preparation purpose?

The sample questions for the PGECET Examination conducted which is required for preparation purpose are as given below:

Q01. While designing controller, the advantage of pole– zero cancellation is
(A) The system order is increased
(B) The system order is reduced
(C) The cost of controller becomes low
(D) System’s error reduced to optimum levels

Q02. Assertion (A): PSK is inferior to FSK.
Reason (R): PSK require less bandwidth than FSK.
Choose correct option:
(A) Both A and R individually true and R is the correct explanation of A.
(B) Both A and R individually true and but R is not the correct explanation of A.
(C) A is true but R is false
(D) A is false

Q03. In a certain telemetry system, the measured values are converted to digital form. The digital values can then be transmitted via FSK (binary or quaternary) , or BPSK or QPSK systems. Out of these the best noise immunity can be obtained with
(A) binary FSK (B) quaternary FSK
(C) BPSK (D) QPSK

Q04. An antenna, when radiating, has a highly directional radiation pattern. When the antenna is receiving, its
radiation pattern
(A) is more directive (B) is less directive
(C) is the same (D) exhibits no directivity at all

Q05. The p-type substrate in a monolithic circuit should be connected to
(A) any dc ground point
(B) the most negative voltage available in the circuit
(C) the most positive voltage available in the circuit
(D) no where, i.e. be floating

Q06. Consider the List I and List II

List I ( Oscillator) List II ( Characteristic)
P. Colpitts Oscillator 1. RC Oscillator
Q. Phase shift Oscillator 2. LC Oscillator
R. Tunnel diode Oscillator 3. Negative resistance Oscillator
S. Relaxation Oscillator 4. Sweep Circuits

The correct match is
P Q R S
(A) 1 2 3 4
(B) 2 1 3 4
(C) 1 2 4 3
(D) 2 1 4 3

Q07. The skin depth is
(A) 2.52 m (B) 5.05 m
(C) 8.46 m (D) 4.23 m

Q08. Let the clock pulses be numbered 1, 2, 3... after the point at which the FF is reset (Q0=0). The circuit is a

(A) even parity checker (B) odd parity generator
(C) Both A and B (D) None of the above

Q09. The majority carrier concentration is
(A) 8 1015 ́ cm-3, n -type
(B) 8 1015 ́ cm-3, p -type
(C) 4 1015 ́ cm-3, n -type
(D) 4 1015 ́ cm-3, p -type

Q10. The majority carrier mobility is

(A) 430 cm V s
(B) 215 cm V s
(C) 390 cm V s
(D) 195 cm V s

Q11. Consider the following 8085 assembly program

MVI A, DATA1
MOV B, A
SUI 51H
JC DLT
MOV A, B
SUI 82H
JC DSPLY

DLT: XRA A
OUT PORT1
HLT

DSPLY: MOV A, B
OUT PORT2
HLT

This program will display
(A) the bytes from 51H to 82H at PORT2
(B) 00H AT PORT1
(C) all byte at PORT1
(D) the bytes from 52H to 81H at PORT 2

Q12. Consider the following program
MVI A, BYTE1
RRC
RRC
If BYTE1 =32H, the contents of A after the execution of program will be
(A) 08H (B) 8CH
(C) 12H (D) None of the above

Q13. Consider the statements below:
1. If the output waveform from an OR gate is the same as the waveform at one of its inputs, the other input is being held permanently LOW.
2. If the output waveform from an OR gate is always HIGH, one of its input is being held permanently HIGH.
The statement, which is always true, is
(A) Both 1 and 2 (B) Only 1
(C) Only 2 (D) None of the above

Q14. A pn junction diode is operating in reverse bias region. The applied reverse voltage, at which the ideal reverse current reaches 90% of its reverse saturation current, is
(A) -59.6 mV
(B) 2.7 mV
(C) 4.8 mV
(D) 42.3 mV

Q15. In bipolar transistor biased in the forward-active region the base current is I
B=50mA and the collector currents is IC=2 7. mA. The a is
(A) 0.949
(B) 54
(C) 0.982
(D) 0.018

Q16. Consider the following table

Diameter of heart (in mm)
Number of persons
120
5
121
9
122
14
123
8
124
5
125
9

The median of the above frequency distribution is
(A) 122 mm (B) 123 mm
(C) 122.5 mm (D) 122.75 mm

Q17. In TDM non essential frequency components of the modulating signal are removed by
(A) sampler (B) attenuator
(C) pre-alias filter (C) modulator

Q18. Coherent demodulation of FSK signal can be affected using
(A) correlation receiver (B) bandpass filter and envelope detectors
(C) discriminator detection (C) above all

Q19. Two dissimilar antennas having their maximum directivities equal,
(A) must have their beamwidths also equal.
(B) can not have their beamwidths equal because they are dissimilar antenna.
(C) may not necessarily have their maximum power gain equal.
(D) must have their effective aperture areas ( capture areas) also equal.

Q20. The dominant mode in a rectangular waveguide is TE10 because this mode has
(A) no attenuation (B) no cut-off
(C) no magnetic field component (D) the highest cut-off wavelength

__________________
Answered By StudyChaCha Member