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Consider the following statements
| |
A. | 1 and 2 only [Wrong Answer] |
B. | 1, 3 and 4 only [Wrong Answer] |
C. | 1, 2 and 4 only [Correct Answer] |
D. | 2 and 4 only [Wrong Answer] |
View Answer
Explanation:-
Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ Which of the following modes of transmission will not be supported by a rectangular waveguide?
TE_{15}
TE_{12}
TM_{11}
TM_{10}
⇒ An amplifier has a large ac input signal. The clipping occurs on both the peaks. The output voltage will be nearly a
sine wave
square wave
triangular wave
(a) or (c)
⇒ What is the approximate steady state current in the above circ
50 A
25 A
0.208333333333333
0.0416666666666667
⇒ Electrical contact materials used in switches, brushes, relay must possess
high thermal conductivity and high melting point
low thermal conductivity and low melting point
high thermal conductivity and low melting point
low thermal conductivity and high melting point
⇒ Each kilometer of travel in electromagnetic radiation means a time delay of
330 μs
33 μs
3.3 μs
0.33 μs
⇒ Feedback factor may be less or more than 1.
TRUE
FALSE
⇒ The circuit of figure is ca
diode bias
current mirror
complementary mirror
none of the above
⇒
A-1, B-2, C-3, D-4
A-2, B-3, C-4, D-1
A-4, B-1, C-3, D-2
A-4, B-3, C-1, D-2
⇒ A thyristor has a turn on time of 6 μs. If the anode circuit is inductive, the turn on time will be
6 μs
less than 6μs
more than 6 μs
either 6 μs or less
⇒
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true but R is false
A is false but R is true
⇒ In figure the zener cur
is always 130 mA
may vary between 10 mA and 130 mA
may vary between 60 mA and 130 mA
is always equal to 65 mA
⇒ Status register in the 8156 is read with
IN 20 H
OUT 20 H
either (a) or (b)
none of the above
⇒ The following sequence represents autocorrelation of a real valued signal. The energy of real valued sequence is given by __________ x(n) = {1, _, 3, _, 5, _, 7, _, 9, 10, _, 8, _, 6, _, 4, _, 2
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2}] + 10^{2}
10
10^{2}
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2} + 10^{2}]
⇒ Which of the following has highest power gain?
CE
CC
CB
CB or CC
⇒ Inverse Fourier transform of '1' is
U(t)
δ(t)
0'
infinite
⇒ In a bridge rectifier circuit the rms value of input ac voltage is 10 V. The PIV across each diode is
7.07 V
14.14 V
10 V
28.28 V
⇒ In figure, the switch is closed at t = 0. At t = 0^{+} The value of current supplied by batter
0.0416666666666667
0.0833333333333333
zero
infinity
⇒ The Fourier series of an odd periodic function contains
odd harmonics only
even harmonics only
cosine harmonics only
sine harmonics only
⇒ Which of the following statement is incorrect?
UJT is a 3-terminal diode having two unequally doped regions
A UJT can be triggered by any one of its three terminals
The bi-directional switching characteristics of a diac are symmetrical
As compared to JFETs, MOSFETs generate less noise in high gain amplifiers
⇒ The impulse response h(t) of a linear invariant continuous time system is given by h(t) = exp (- 2t) u(t), where u(t) denotes the unit step function. The output of this system to the sinusoidal input x(t) = 2cos(2t) for all time t, is
0
2^{-0.25} cos (2t - 0.125p)
2^{-0.5} cos (2t - 0.125p)
2^{-0.5} cos (2t - 0.25p)
⇒ The two-transistor model of a thyristor consists of two transistors :
one n-p-n and other p-n-p
both p-n-p
both n-p-n
one n-p-n and other UJT
⇒
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true
⇒ In an Anderson bridge the unknown inductance is measured in terms of
known inductance and resistance
known inductance
known capacitance and resistance
known capacitance
⇒ In figure, the voltmeter is ideal. The transformer has two identical windings with perfect coupling. The reading of voltmete
440 V
220 V
110 V
zero
⇒ The minimum energy of a photon required for intrinsic excitation is equal to
energy of bottom of conduction band
energy of top of valence band
forbidden gap energy
Fermi energy
⇒ A voltage wave having 5% fifth harmonic content is applied to a series RC circuit. The percentage fifth harmonic content in the current wave will be
0.05
more than 5%
less than 5%
equal or more than 5%
⇒ The drain characteristics of JFET are drawn between
V_{GS} and V_{DS} for different values of drain current
drain current and V_{GS} for different values of V_{DS}
drain current and V_{DS} for different values of V_{GS}
drain current and V_{GS }for one value of V_{DS}
⇒ The concentration of minority carriers in an extrinsic semiconductor under equilibrium is
directly proportional to the doping concentration
inversely proportional to doping concentration
directly proportional to intrinsic concentration
inversely proportional to the intrinsic concentration
⇒ The early effect in a BJT is caused by
fast turn on
fast turn off
large collector base reverse bias
large emitter base forward bias
⇒ In a TWT the amplitude of resultant wave travelling down the helix
increases exponentially
increases linearly
decreases exponentially
is almost constant
⇒ Which of the following modes of transmission will not be supported by a rectangular waveguide?
TE_{15}
TE_{12}
TM_{11}
TM_{10}
⇒ An amplifier has a large ac input signal. The clipping occurs on both the peaks. The output voltage will be nearly a
sine wave
square wave
triangular wave
(a) or (c)
⇒ What is the approximate steady state current in the above circ
50 A
25 A
0.208333333333333
0.0416666666666667
⇒ Electrical contact materials used in switches, brushes, relay must possess
high thermal conductivity and high melting point
low thermal conductivity and low melting point
high thermal conductivity and low melting point
low thermal conductivity and high melting point
⇒ Each kilometer of travel in electromagnetic radiation means a time delay of
330 μs
33 μs
3.3 μs
0.33 μs
⇒ Feedback factor may be less or more than 1.
TRUE
FALSE
⇒ The circuit of figure is ca
diode bias
current mirror
complementary mirror
none of the above
⇒
Match the following:
List I (Operator) | List II (Description) | ||
---|---|---|---|
A. | ! = | 1. | Left shift |
B. | = = | 2. | Right Shift |
C. | < < | 3. | Equal to |
D. | > > | 4. | Not equal to |
A-1, B-2, C-3, D-4
A-2, B-3, C-4, D-1
A-4, B-1, C-3, D-2
A-4, B-3, C-1, D-2
⇒ A thyristor has a turn on time of 6 μs. If the anode circuit is inductive, the turn on time will be
6 μs
less than 6μs
more than 6 μs
either 6 μs or less
⇒
Assertion (A): Orbital magnetic moment of an electron in an atom is of the order of 1 Bohr magneton.
Reason (R): 1 Bohr magneton = 9.27 x 10^{-24} A/m^{2}.
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true but R is false
A is false but R is true
⇒ In figure the zener cur
is always 130 mA
may vary between 10 mA and 130 mA
may vary between 60 mA and 130 mA
is always equal to 65 mA
⇒ Status register in the 8156 is read with
IN 20 H
OUT 20 H
either (a) or (b)
none of the above
⇒ The following sequence represents autocorrelation of a real valued signal. The energy of real valued sequence is given by __________ x(n) = {1, _, 3, _, 5, _, 7, _, 9, 10, _, 8, _, 6, _, 4, _, 2
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2}] + 10^{2}
10
10^{2}
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2} + 10^{2}]
⇒ Which of the following has highest power gain?
CE
CC
CB
CB or CC
⇒ Inverse Fourier transform of '1' is
U(t)
δ(t)
0'
infinite
⇒ In a bridge rectifier circuit the rms value of input ac voltage is 10 V. The PIV across each diode is
7.07 V
14.14 V
10 V
28.28 V
⇒ In figure, the switch is closed at t = 0. At t = 0^{+} The value of current supplied by batter
0.0416666666666667
0.0833333333333333
zero
infinity
⇒ The Fourier series of an odd periodic function contains
odd harmonics only
even harmonics only
cosine harmonics only
sine harmonics only
⇒ Which of the following statement is incorrect?
UJT is a 3-terminal diode having two unequally doped regions
A UJT can be triggered by any one of its three terminals
The bi-directional switching characteristics of a diac are symmetrical
As compared to JFETs, MOSFETs generate less noise in high gain amplifiers
⇒ The impulse response h(t) of a linear invariant continuous time system is given by h(t) = exp (- 2t) u(t), where u(t) denotes the unit step function. The output of this system to the sinusoidal input x(t) = 2cos(2t) for all time t, is
0
2^{-0.25} cos (2t - 0.125p)
2^{-0.5} cos (2t - 0.125p)
2^{-0.5} cos (2t - 0.25p)
⇒ The two-transistor model of a thyristor consists of two transistors :
one n-p-n and other p-n-p
both p-n-p
both n-p-n
one n-p-n and other UJT
⇒
Assertion (A): An RTD uses platinum coil.
Reason (R): Platinum is a very stable material.
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true
⇒ In an Anderson bridge the unknown inductance is measured in terms of
known inductance and resistance
known inductance
known capacitance and resistance
known capacitance
⇒ In figure, the voltmeter is ideal. The transformer has two identical windings with perfect coupling. The reading of voltmete
440 V
220 V
110 V
zero
⇒ The minimum energy of a photon required for intrinsic excitation is equal to
energy of bottom of conduction band
energy of top of valence band
forbidden gap energy
Fermi energy
⇒ A voltage wave having 5% fifth harmonic content is applied to a series RC circuit. The percentage fifth harmonic content in the current wave will be
0.05
more than 5%
less than 5%
equal or more than 5%
⇒ The drain characteristics of JFET are drawn between
V_{GS} and V_{DS} for different values of drain current
drain current and V_{GS} for different values of V_{DS}
drain current and V_{DS} for different values of V_{GS}
drain current and V_{GS }for one value of V_{DS}
⇒ The concentration of minority carriers in an extrinsic semiconductor under equilibrium is
directly proportional to the doping concentration
inversely proportional to doping concentration
directly proportional to intrinsic concentration
inversely proportional to the intrinsic concentration
⇒ The early effect in a BJT is caused by
fast turn on
fast turn off
large collector base reverse bias
large emitter base forward bias
⇒ In a TWT the amplitude of resultant wave travelling down the helix
increases exponentially
increases linearly
decreases exponentially
is almost constant