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Assertion (A): PIN diode can be used as attenuator and limiter. Reason (R): PIN diode has a thin intrinsic layer. | |
A. | Both A and R are correct and R is correct explanation of A [Wrong Answer] |
B. | Both A and R are correct but R is not correct explanation of A [Correct Answer] |
C. | A is correct but R is wrong [Wrong Answer] |
D. | A is wrong but R is correct [Wrong Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ Which one of the following logic families can be operated using a supply voltage from 3 V to 15 V?
TTL
ECL
PMOS
CMOS
⇒ Consider the following statements regarding negative feedback
all
1, 2
1, 3
1 only
⇒ In the given figure forward voltage wave has a magni
90 V
60 V
30 V
10 V
⇒ Photo electric emission can occur only if
wave length of incident radiation is equal to threshold value
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none of the above
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⇒ In a one pole active low pass filter, the cut off frequency is f_{c}. Then
gain decreases at the rate of 20 dB per decade increase in frequency above f_{c}
gain decreases at the rate of 20 dB per decade decrease in frequency below f_{c}
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⇒ If a small amount of Cu is added to Ni conductor, then
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⇒ The output y(t) of a linear time invariant system is related to its input x(t) by the following equation y(t) = 0.5x(t - t_{d} + 1) + x(t - t_{d}) + 0.5 x(t - t_{d} + 7). The filter transfer function H(ω) of such a system is given by
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⇒ Which one of the following logic families can be operated using a supply voltage from 3 V to 15 V?
TTL
ECL
PMOS
CMOS
⇒ Consider the following statements regarding negative feedback
- It increases system gain
- It improves sensitivity
- It improves system stability
all
1, 2
1, 3
1 only
⇒ In the given figure forward voltage wave has a magni
90 V
60 V
30 V
10 V
⇒ Photo electric emission can occur only if
wave length of incident radiation is equal to threshold value
wave length of incident radiation is less than threshold value
frequency of incident radiation is less than threshold frequency
none of the above
⇒ The address to which a software or hardware restart branches is known as
Vector location
SID
SOD
TRAP
⇒ The increase in intensity of trace in a CRO causes a change in
beam current
frequency of time base
gain of Y amplifier
accelerating voltage
⇒ In a one pole active low pass filter, the cut off frequency is f_{c}. Then
gain decreases at the rate of 20 dB per decade increase in frequency above f_{c}
gain decreases at the rate of 20 dB per decade decrease in frequency below f_{c}
gain decreases at the rate of 40 dB per decade increase in frequency above f_{c}
gain decreases at the rate 40 dB per decade decrease in frequency below f_{c}
⇒ Which of the following is non-sinusoidal oscillator?
Multivibrator
Relaxation oscillator using UJT
Relaxation oscillator using tunnel diode
Any of the above
⇒ Which of the following is not advantage of FM over AM?
Noise immunity
Capture effect
Fidelity
Spluttering effect
⇒ In a valence crystal, the valence electrons
are not shared
are shared between neighbouring atoms
are shared by all atoms
any of the above
⇒ The maximum phase difference between the applied voltage and current in a RLC series current with finite values of R, L, C, and f can be
less than 90°
less than 45°
180°
30°
⇒ Bode magnitude plot is drawn between
magnitude of network function and ω
dB magnitude and log ω
dB magnitude and ω
log_{e} (magnitude) and log ω
⇒ The gate width of a monostable multivibrator is given by
T = 1.1 RC
T = 0.693 RC
0.963 RC
T = 0.369 RC
⇒ Consider an incremental vector element of length ΔL and angle between an electric field E and ΔL s cos &the
In the direction of E
In opposite direction of E
In the angle of 45° with E
In the angle of 60° with E
⇒ In register index addressing mode the effective address is given by
index register value
sum of the index register value and the operand
operand
difference of the index register value and the operand
⇒ A single phase half wave converter is used to charge a battery of 50 V. The thyristor is continuously fired by dc signal. Input voltage is v = V_{m} sin ωt. The thyristor will conduct
from 0 to 180°
when v > 50 V
from 0 to 90°
When v < 50 V
⇒ Directivity of antenna is defined as
maximum directive gain
average directive gain
∞
0
⇒ If a small amount of Cu is added to Ni conductor, then
resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni
residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres
resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects
resistivity of Ni remains the same
⇒ In 8085 the instruction
MOV A, M
is an example ofDirect addressing
Immediate addressing
Register addressing
Register indirect addressing
⇒ A lag compensator is essentially a
low pass filter
high pass filter
band pass filter
either (a) or (b)
⇒ A full wave rectifier supplies a load of 1 kΩ. The a.c. Voltage applied to the diodes is 220 - 0 - 220 Volts rms. If diode resistance is neglected, then Average d.c. Voltage
220 V
200 V
198 V
0 volts
⇒ 2's complement representation of a 16 bit number (one sign bit and 15 magnitude bits) is FFFF. Its magnitude in decimal representation is
0
1
32, 767
65, 535
⇒ A rectangular pulse is passed through an L.P.F. The response is a
triangular
trapezoidal function
sampling
Both (a) and (b)
⇒ A rectangular waveguide is a
rectangular conducting wire to propagate electromagnetic waves
hollow rectangular walled room carrying electromagnetic wave
hollow rectangular conducting tube through which electromagnetic waves can be propagated
tube antenna to transmit and receive electromagnetic waves
⇒ A ship-to-ship communication system is plagued by fading. The best solution seems to be the use of
space diversity
frequency diversity
a broad band antenna
a more directional antenna
⇒ The overall noise temperature T_{e}, absolute temperature T and noise figure F are related as
T_{e} = T(F - 1)
T_{e} = F(T - 1)
T = T_{e}(F - 1)
T_{e} = (T)(F)
⇒ The decimal equivalent of binary 1101.11 is
9.75
13.75
11.5
11.75
⇒ In a microwave coaxial cable the inner conductor radius is a and inner radius of outside conductor is b. For TE_{11} mode the cut off wavelength is about
a + b
p(a + b)
pa
pb
⇒ A single phase half wave controlled rectifier circuit has a free wheeling diode. The load is a combination of R and L. The firing angle is a. The period of conduction of SCR and free wheeling diode respectively are
a < ωt < p and p < ωt < (2p + a)
a < ωt < p and p < ωt < 2p
a < ωt < (p + a) and (p + a) < ωt < 2p
a < ωt < p and p < ωt < (2p - a)
⇒ The output y(t) of a linear time invariant system is related to its input x(t) by the following equation y(t) = 0.5x(t - t_{d} + 1) + x(t - t_{d}) + 0.5 x(t - t_{d} + 7). The filter transfer function H(ω) of such a system is given by
(1 + cos ωt)e^{-jωt} d
(1 + 0.5 cos ωt)e^{-jωt} d
(1 + cos ωt)e^{jωt} d
(1 - 0.5 cos ωt)e^{-jωt} d