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Some advantages of optical fibre cables are
| |
A. | 1 only [Wrong Answer] |
B. | 1 and 2 [Wrong Answer] |
C. | 1, 2, 3 [Correct Answer] |
D. | 2, 3 [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 :
⇒ As compared to bipolar junction transistor, a FET
is less noisy
has better thermal stability
has higher input resistance
all of the above
⇒ Fourier transform F(jω) of an arbitrary signal has the property
F(jω) = F(- jω)
F(jω) = - F(- jω)
F(jω) = F*(- jω)
F(jω) = - F*(jω)
⇒ The real part of complex dielectric constant and tanδ for a dielectric are 2.1 and 5 x 10^{-4} at 100 Hz respectively. The imaginary part of dielectric constant at 100 Hz is
1.05 x 10^{-3}
2.1 x 10^{-3}
5 x 10^{-3}
1.05 x 10^{-2}
⇒ The main advantage of superheterodyne receiver is
better tracking
simple cut
better alignment
improvement in selectivity and sensitivity
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Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct
⇒ Which of the following methods is used for solving differential equations numerically?
Runge-Kutta method
Gauss-elimination method
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Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct but R is wrong
R is correct but A is wrong
⇒ For a MOS capacitor fabricated on a P-type semiconductor, strong inversion occurs when
surface potential is equal to Fermi potential
surface Potential is greater than Fermi potential
surface potential is - ve and equal to Fermi potential in magnitude
surface potential is + ve and equal to twice the Fermi potential
⇒ The minority carrier life time and diffusion constant in a semiconducting material are 100 μs and 100 cm^{2}/s respectively. The diffusion length of carriers is
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⇒ A signal is sampled at 8 kHz and is quantized using 8 bit uniform quantizer. Assuming SNR_{q} for a sinusoidal signal, the correct statement for PCM signal with a bit rate of R is
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R = 64 KbPs, SNR_{q} = 49.8 dB
R = 64 KbPs, SNR_{q} = 58.8 dB
R = 32 KbPs, SNR_{q} = 49.8 dB
⇒ In a series RLC circuit p.f is lagging when f < resonance frequency.
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⇒ The first column of a Routh arra
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3
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5
⇒ The carrier mobility in a semiconductor is 0.4 m^{2}/Vs. Its diffusion constant at 300 K will be (in m^{2}/s)
0.4
0.16
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⇒ A dc separately excited motor has constant field current. The armature is fed from a single phase supply through a full converter. When a = 0, speed is 500 rpm. If a = 45°, the speed is likely to be
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about 250 rpm
about 175 rpm
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⇒ The household energy meter is
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⇒ In the circuit of figure diode will con
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⇒ A 400 W carrier is amplitude modulated with m = 0.75. The total power in AM is
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512 W
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⇒ The circuit shown in the figure
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A-1, B-2, C-3, D-4
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⇒ In figure the current distribution is represented
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⇒ The advantage of modified series inverter with two inductors and two capacitors is
the intermittent operation of battery is avoided
efficiency of circuit is more
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⇒ A dc separately excited motor has a constant field current. The armature is fed from a single phase supply through a semi-converter. When a = 0, speed is 600 rpm. If a = 90°, the speed is likely to be
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about 150 rpm
about 75 rpm
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⇒ The radiation pattern of a parabola antenna is
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⇒ For the logic circuit of the given figure the simplified Boolean equa
Y = (A + B) (C + D) (E + F)
Y = A = B + C + D + E + F
ABCDEF
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⇒ 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
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2^{-0.25} cos (2t - 0.125p)
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⇒ For a n-channel JFET with r_{0} = 10 kW, (V_{Gs}= 0 V, V_{P} = - 6 V)the drain resistance r_{d} at V_{GS}= - 3 V is given by
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⇒ As compared to bipolar junction transistor, a FET
is less noisy
has better thermal stability
has higher input resistance
all of the above
⇒ Fourier transform F(jω) of an arbitrary signal has the property
F(jω) = F(- jω)
F(jω) = - F(- jω)
F(jω) = F*(- jω)
F(jω) = - F*(jω)
⇒ The real part of complex dielectric constant and tanδ for a dielectric are 2.1 and 5 x 10^{-4} at 100 Hz respectively. The imaginary part of dielectric constant at 100 Hz is
1.05 x 10^{-3}
2.1 x 10^{-3}
5 x 10^{-3}
1.05 x 10^{-2}
⇒ The main advantage of superheterodyne receiver is
better tracking
simple cut
better alignment
improvement in selectivity and sensitivity
⇒
Assertion (A): Negative feedback reduces the gain of an amplifier
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Both A and R are correct and R is correct explanation for A
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A is correct R is wrong
A is wrong R is correct
⇒ Which of the following methods is used for solving differential equations numerically?
Runge-Kutta method
Gauss-elimination method
Newton-Raphson method
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Assertion (A): When performance specifications are given in term of transient response characteristics, root locus method is a suitable method.
Reason (R): When performance specifications in terms of state variables are given, modern control methods can be used.
Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
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R is correct but A is wrong
⇒ For a MOS capacitor fabricated on a P-type semiconductor, strong inversion occurs when
surface potential is equal to Fermi potential
surface Potential is greater than Fermi potential
surface potential is - ve and equal to Fermi potential in magnitude
surface potential is + ve and equal to twice the Fermi potential
⇒ The minority carrier life time and diffusion constant in a semiconducting material are 100 μs and 100 cm^{2}/s respectively. The diffusion length of carriers is
0.1 cm
0.01 cm
0.0141 cm
1 cm
⇒ A signal is sampled at 8 kHz and is quantized using 8 bit uniform quantizer. Assuming SNR_{q} for a sinusoidal signal, the correct statement for PCM signal with a bit rate of R is
R = 32 KbPs, SNR_{q} = 25.8 dB
R = 64 KbPs, SNR_{q} = 49.8 dB
R = 64 KbPs, SNR_{q} = 58.8 dB
R = 32 KbPs, SNR_{q} = 49.8 dB
⇒ In a series RLC circuit p.f is lagging when f < resonance frequency.
TRUE
FALSE
⇒ The first column of a Routh arra
2
3
4
5
⇒ The carrier mobility in a semiconductor is 0.4 m^{2}/Vs. Its diffusion constant at 300 K will be (in m^{2}/s)
0.4
0.16
0.04
0.01
⇒ A dc separately excited motor has constant field current. The armature is fed from a single phase supply through a full converter. When a = 0, speed is 500 rpm. If a = 45°, the speed is likely to be
about 350 rpm
about 250 rpm
about 175 rpm
about 125 rpm
⇒ The household energy meter is
indicating instrument
recording instrument
integrating instrument
none of the above
⇒ In the circuit of figure diode will con
from 90 to 180° in the positive half cycle
from 30° to 180° in the positive half cycle
from 50° to 160° in the positive half cycle
from 30° to 150° in the positive half cycle
⇒ Consider the following statements about advantages of phase discriminator over slope detector
- Fewer tuned circuits
- Greater limiting
- Better linearity
- Easy alignment
1, 2, 3, 4
2, 3, 4
1, 2, 3
1, 3, 4
⇒ A 400 W carrier is amplitude modulated with m = 0.75. The total power in AM is
400 W
512 W
588 W
650 W
⇒ The circuit shown in the figure
positive logic OR circuit
negative logic OR circuit
positive logic AND circuit
negative logic AND circuit
⇒
Match the following:
List I | List II | ||
---|---|---|---|
A. | True type | 1. | Type of calculator in window |
B. | FIND | 2. | Window command |
C. | WORD PAD | 3. | Name of a Font |
D. | STANDARD | 4. | Has many features of a simple word processor |
A-1, B-2, C-3, D-4
A-4, B-3, C-2, D-1
A-3, B-2, C-1, D-4
A-3, B-2, C-4, D-1
⇒ In figure the current distribution is represented
curve A
curve B
curve C
curve D
⇒ In a FM receiver, amplitude limiter
amplifiers low frequency signals
reduces the amplitude of signals
eliminates any change in amplitude of received FM signals
none of the above
⇒ Poor power factor
reduces load handling capability of electrical system
results in more power losses in the electrical system
overloads alternators, transformers and distribution lines
all
⇒ The advantage of modified series inverter with two inductors and two capacitors is
the intermittent operation of battery is avoided
efficiency of circuit is more
the output frequency is low
all of the above
⇒ A dc separately excited motor has a constant field current. The armature is fed from a single phase supply through a semi-converter. When a = 0, speed is 600 rpm. If a = 90°, the speed is likely to be
about 300 rpm
about 150 rpm
about 75 rpm
about zero
⇒ The radiation pattern of a parabola antenna is
omnidirectional
a figure of directional
highly directional
none of the above
⇒ For the logic circuit of the given figure the simplified Boolean equa
Y = (A + B) (C + D) (E + F)
Y = A = B + C + D + E + F
ABCDEF
ABC + DEF
⇒ Which of the following memory is preferred in case of calculators?
Dynamic RAM
Dynamic ROM
Static ROM
Static RAM
⇒ 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)
⇒ For a n-channel JFET with r_{0} = 10 kW, (V_{Gs}= 0 V, V_{P} = - 6 V)the drain resistance r_{d} at V_{GS}= - 3 V is given by
40 kΩ
2.5 kΩ
4.44 kW
120 kW