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Consider the following statements: In a differential amplifier using JFET, the differential output offset is due to
| |
A. | 1 and 2 [Correct Answer] |
B. | 1, 2, 3 [Wrong Answer] |
C. | 2, 3 [Wrong Answer] |
D. | 1, 3 [Wrong Answer] |
View Answer
Explanation:-
Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
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⇒ In a series L-C circuit fed by ac voltage, voltage drops across L and C are 40 V and 30 V respectively. The supply voltage is
70 V
10 V
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⇒ Under low level injection assumption, the infected minority carrier current for an extrinsic semiconductor is essentially the
diffusion current
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⇒ A thermometer requires 1 minute to indicate 98% of its final response to a step input. If it is a first order system the time constant is
1 minute
0.5 minute
0.25 minute
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⇒ In sinusoidal PWM for inverters the width of different pulses are not the same.
TRUE
FALSE
⇒ Which of the following cannot be the Fourier series expansion of a periodic signal?
x(t) = 2 cos t + 3 cos 3t
x(t) = 2 cos pt + 7 cos t
x(t) = cos t + 0.5
x(t) = 2 cos 1.5pt + sin 3.5 pt
⇒ In figure, the curre
is 2 A from A to B
is 2 A from B to A
depends on the value of R
none of the above
⇒ To relay outdoor remotely located live programs, TV transmitter use
microwave links
coaxial cable link
open wire link
either (b) or (c)
⇒ If an admittance Y(s) has a term Ks, the realization would give
an inductance of value K
a resistance of value K
a capacitance of value K
either (a) or(c)
⇒ In a second order system, peak overshoot is independent of
damping factor
natural frequency
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neither damping factor nor natural frequency
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2, Fetch and memory write
3, Fetch and memory write
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⇒ 39.12_{10} = __________ _{10}
10111.0001111
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1111.0001111
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a virtual ground at input
a virtual ground at output
virtual ground at input as well as at output
none of the above
⇒ For overdamped systems a quadratic factor in transfer function can be replaced by two first order factors with real poles
TRUE
FALSE
⇒ In measurements using strain gauge, the dummy strain gauge is used to
compensate for resistance of strain gauge
compensate for change in temperature
compensate for error due to change in voltage of battery
compensate for error in voltmeter
⇒ For the logic circuit shown in figure, the simplified Boolean expression for the output
A + B + C
AB
B
C
⇒ Current having waveform in figure flows through 10 Ω resistance. Average powe
1000 W
500 W
333.3 W
250 W
⇒ Which of the following oscillators is used for the generation of high frequencies?
R-C phase shift oscillator
Wien bridge oscillator
L-C oscillator
Blocking oscillator
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Assertion (A): Tunnel diode is used in many pulse and digital circuits.
Reason (R): The v-i curve of a tunnel diode resembles letter 'N'.
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
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⇒ Which of the following is a circularly polarized antenna?
Horn
Dipole
Helical
Pyramidal
⇒ Macroscopic quantities of a given material
are absolutely constant
are a function of temperature
are a function of temperature, pressure field
none of the above
⇒ The current through common emitter resistor of a differential amplifier is called
differential current
emitter current
ground current
tail current
⇒ In common base connection, the output characteristics of a bipolar junction transistor is drawn between
I_{C} and V_{CB}
I_{C} and V_{CE}
I_{E} and V_{CB}
I_{E} and V_{CE}
⇒ The rms voltage measured across each of the circuit element in figure is as shown, when the circuit is excited by a sinusoidal voltage E_{s}, the rms value of the source voltage e_{s10 volt2 voltEs5 volt}
⇒ In a 3 phase fully controlled converter the firing frequency is
3 times the line frequency
6 times the line frequency
9 times the line frequency
12 times the line frequency
⇒ The total number of fundamental products of three variables is
3
5
8
16
⇒ The characteristics of which device has peak point and valley point
SCR
PUT
SCS
Shockley diode
⇒ Maximum effective aperture (A_{e})max of short dipole antenna is
1.119 λ^{2}
0.119 λ^{2}
1.19 λ^{2}
1.919 λ^{2}
⇒ The amplifier circuit shown below uses a silicon transistor. The capacitors C_{c} and C_{E} can be assumed to be short at signal frequency and the effect of output resistance r_{0} can be ignored. If C_{E} is disconnected from the circuit, which one of the following statements is T
The input resistance R_{i} increases and the magnitude of voltage gain A_{v} decreases
The input resistance R_{i} decreases and the magnitude of voltage gain A_{v} decreases
Both input resistance R_{i} and the magnitude of voltage gain A_{v} decrease
Both input resistance R_{i} and the magnitude of voltage gain A_{v} increase