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ESE 2022 EC Technical Quiz 11
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Question 1
The forward resistance of the diode shown in the below circuit is 5 ohms, and the other parameters are same as those of an ideal diode. Then what is the d.c. component of the source current?
Question 2
Assertion (A): AN eight-bit PCM system performs better than a six-bit PCM system.
Reason (R): Eight-bit system produces smaller quantization noise than a six-bit system.
Reason (R): Eight-bit system produces smaller quantization noise than a six-bit system.
Question 3
For an op-amp having a slew rate of 2 V/μs, if the input signal varies by 0.5 V in 10 μs, the maximum closed-loop voltage gain will be
Question 4
Consider the following statements:
1) The efficiency of a light emitting diode (LED) decreases with the injected current.
2) The efficiency of a LED increases with a decrease in temperature.
3) The light emitted is concentrated near the junction because most of the carriers are within a diffusion length of the junction.
4) Light is emitted in a LED when electrons move from the valence band to the conduction band.
Which of these statements are correct?
1) The efficiency of a light emitting diode (LED) decreases with the injected current.
2) The efficiency of a LED increases with a decrease in temperature.
3) The light emitted is concentrated near the junction because most of the carriers are within a diffusion length of the junction.
4) Light is emitted in a LED when electrons move from the valence band to the conduction band.
Which of these statements are correct?
Question 5
The system matrix of a linear time invariant continuous time system is given by
A =
What are the roots of the characteristic equation?
A =
What are the roots of the characteristic equation?
Question 6
The voltage applied to an R-L circuit at t=0 when switch is closed is 100 cos (100t + 30o). The circuit resistance is 80 Ω and inductance is 0.6 H (in which initial current is zero).
What is the maximum amplitude of current flowing through the circuit?
What is the maximum amplitude of current flowing through the circuit?
Question 7
Match List-I (Parameter to be measured) with List-II (Instrument to be Used) and select the correct answer using the code given below the lists:
List-I
A) Average value of current
B) RMS value of current
C) Frequency of a wave
D) Strain gauge resistance
List-II
1) Self-balancing bridge
2) Wien bridge
3) PMMC ammeter
4) Moving-iron ammeter
List-I
A) Average value of current
B) RMS value of current
C) Frequency of a wave
D) Strain gauge resistance
List-II
1) Self-balancing bridge
2) Wien bridge
3) PMMC ammeter
4) Moving-iron ammeter
Question 8
The transfer function of a phase-lead compensator is given by:
What is the maximum shift provided by such a compensator?
What is the maximum shift provided by such a compensator?
Question 9
A uniform plane wave has a wavelength of 2 cm in free space and 1 cm in a perfect dielectric.what is the relative permittivity of the dielectric ?
Question 10
The instruction JNC 16 bit refers to Jump to 16 bit address if
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ESE & GATE ECGeneralSep 27ESE & GATE EC
