Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
In a line VSWR of a load is 6 dB. The reflection coefficient will be | |
A. | 0.033 [Wrong Answer] |
B. | 0.33 [Wrong Answer] |
C. | 0.66 [Correct Answer] |
D. | 3.3 [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 :
⇒ If f(t) = - f(- t) and f(t) satisfies Dirichlet conditions, then f(t) can be expanded in Fourier series having
sine terms only
cosine terms only
cosine and constant terms
sine and constant term
⇒ A discrete zero memory information source has 40 symbols and each symbol is equally likely. The minimum number of bits required to code the source with uniform length code and entropy of the source are
5 and 5.03
6 and 5.83
5 and 6.64
6 and 5.32
⇒ In a CD the channel separation is
1 μm
1.6 μm
2.5μm
4 μm
⇒ In the given fi
42737
42739
2
1
⇒ The logic performed by the high-noise immunity logic circuit shown belo
OR
AND
NOR
NAND
⇒ Calculate the stability factor and change in I_{C} from 25°C to 100°C for, β = 50, R_{B}/ R_{E} = 250, ΔI_{C0} = 19.9 nA for emitter bias configuration.
42.53, 0.85 μA
40.91, 0.58 μA
40.91, 0.58 μA
41.10, 0.39 μA
⇒ Form factor for a sine wave is
1.414
0.707
1.11
0.637
⇒ If a and b are the width and height of rectangular wave-guide the cut off wavelength λ_{c} for TE_{20} mode is equal to
a
a + b
a - b
a^{2} + b^{2}
⇒ In the forward blocking region of a silicon, controlled rectifier, the SCR is
in the off-state
in the ON state
reverse biased
at the point of breakdown
⇒ A feedback network to be used with an amplifier to provide oscillation is tested and found to give an output of 0.124 V with a 0.5 V input. What percentage negative feedback should be introduced to the amplifier so that linear oscillations result?
0.0125
0.025
-0.0125
-0.025
⇒ I = dq/dt.
TRUE
FALSE
⇒ In microwave communication links, when fading due to rain attenuation occurs then technique adopted for solving the problem would include
antenna replacement and feed correction
amplitude timing and phase correction
polarization shifting and code diversity
path diversity and frequency diversity
⇒ The current flowing through the resistance R in the circuit in the figure has the form 2 cos 4t, where
(0.18 + j0.72)
(0.46 + j1.90)
- (0.18 + j1.90)
(0.23 - 0.35 j)
⇒ A unipole is also known as
omnidirectional radiator
unidirectional radiator
line radiator
none of the above
⇒ The number of channels available in MF band (300 kHz - 3 MHz) for AM modulating signal of 20 kHz is
70
67
100
150
⇒ The difference between resonant commutation and self commutation is
both these methods are based on entirely different principles
in resonant commutation, the commutating elements carry load current but in self commutation, the commutating elements do not carry load current
resonant commutation uses L and C but self commutation uses only capacitor
none of the above
⇒ The number of digits in hexadecimal system
15
16
10
8
⇒ Which of the following is correct?
Voltages across a capacitance can change instantaneously
Voltages across a capacitance cannot change instantaneously
Charge across a capacitance is always constant
Charge across a capacitance can change instantaneously
⇒ Armstrong F.M. transmitter performs frequency multiplication in stages
to increase the overall S/N
for convenience
to reduce the bandwidth
to find the desired value of carrier frequency with frequency deviation
⇒ Bridge circuits using RTD in temperature measurement usually employ 3 lead system so as to obtain
higher sensitivity
better impedance matching
compensation for signal wire resistance
reduction in power consumption
⇒ The velocity factor of a transmission line
mainly depends on the skin effect
is always higher for a solid dielectric than for air
mainly depends on the dielectric constant of the material used
increases the velocity along the transmission line
⇒ A device which converts BCD to seven segment is called
encoder
decoder
multiplexer
none of these
⇒ A signal x(n) = sin(ω_{0}n + φ) is the input to a linear time invariant system having a frequency response H(e^{jω}) If the O/P of the system is Ax(n -n_{0}), then the general form of H(e^{jω}) will be
- n_{0}ω_{0} + β for any arbitrary real β
- n_{0}ω_{0} + 2pk for any arbitrary integer k
n_{0}ω_{0} + 2pk for any arbitrary integer k
- n_{0}ω_{0} + φ
⇒ Flow charts that contain decision sy
represent straight line programs
do not represent straight line programs
all of the above
none of the above
⇒ Fourier transform of f(t) =
jω F(f)
2pf F(f)
F'(f)
None
⇒ Specific resistance of silver is about
0.16 x 10^{-8} Ω-m
1.64 x 10^{-8} Ω-m
16 x 10^{-8} Ω-m
164 x 10^{-8} Ω-m
⇒ A resistance is measured by voltmeter-ammeter method. The voltmeter is 0-250V, ± 1% accuracy and ammeter is 0-5 A, ± 1 % accuracy. The readings of voltmeter and ammeter are 100 V and 2 A respectively. The error in the measured resistance can be
± 1%
± 2%
± 5%
± 10%
⇒ The number of interrupt lines in 8085 is
2
3
4
5
⇒ Which of the following is the software for financial accounting?
COBOL
MS WORD
Page maker
DB III plus
⇒ If a_{ac} for transistor is 0.98 then β_{ac} is equal to
51
49
47
45
⇒ If f(t) = - f(- t) and f(t) satisfies Dirichlet conditions, then f(t) can be expanded in Fourier series having
sine terms only
cosine terms only
cosine and constant terms
sine and constant term
⇒ A discrete zero memory information source has 40 symbols and each symbol is equally likely. The minimum number of bits required to code the source with uniform length code and entropy of the source are
5 and 5.03
6 and 5.83
5 and 6.64
6 and 5.32
⇒ In a CD the channel separation is
1 μm
1.6 μm
2.5μm
4 μm
⇒ In the given fi
42737
42739
2
1
⇒ The logic performed by the high-noise immunity logic circuit shown belo
OR
AND
NOR
NAND
⇒ Calculate the stability factor and change in I_{C} from 25°C to 100°C for, β = 50, R_{B}/ R_{E} = 250, ΔI_{C0} = 19.9 nA for emitter bias configuration.
42.53, 0.85 μA
40.91, 0.58 μA
40.91, 0.58 μA
41.10, 0.39 μA
⇒ Form factor for a sine wave is
1.414
0.707
1.11
0.637
⇒ If a and b are the width and height of rectangular wave-guide the cut off wavelength λ_{c} for TE_{20} mode is equal to
a
a + b
a - b
a^{2} + b^{2}
⇒ In the forward blocking region of a silicon, controlled rectifier, the SCR is
in the off-state
in the ON state
reverse biased
at the point of breakdown
⇒ A feedback network to be used with an amplifier to provide oscillation is tested and found to give an output of 0.124 V with a 0.5 V input. What percentage negative feedback should be introduced to the amplifier so that linear oscillations result?
0.0125
0.025
-0.0125
-0.025
⇒ I = dq/dt.
TRUE
FALSE
⇒ In microwave communication links, when fading due to rain attenuation occurs then technique adopted for solving the problem would include
antenna replacement and feed correction
amplitude timing and phase correction
polarization shifting and code diversity
path diversity and frequency diversity
⇒ The current flowing through the resistance R in the circuit in the figure has the form 2 cos 4t, where
(0.18 + j0.72)
(0.46 + j1.90)
- (0.18 + j1.90)
(0.23 - 0.35 j)
⇒ A unipole is also known as
omnidirectional radiator
unidirectional radiator
line radiator
none of the above
⇒ The number of channels available in MF band (300 kHz - 3 MHz) for AM modulating signal of 20 kHz is
70
67
100
150
⇒ The difference between resonant commutation and self commutation is
both these methods are based on entirely different principles
in resonant commutation, the commutating elements carry load current but in self commutation, the commutating elements do not carry load current
resonant commutation uses L and C but self commutation uses only capacitor
none of the above
⇒ The number of digits in hexadecimal system
15
16
10
8
⇒ Which of the following is correct?
Voltages across a capacitance can change instantaneously
Voltages across a capacitance cannot change instantaneously
Charge across a capacitance is always constant
Charge across a capacitance can change instantaneously
⇒ Armstrong F.M. transmitter performs frequency multiplication in stages
to increase the overall S/N
for convenience
to reduce the bandwidth
to find the desired value of carrier frequency with frequency deviation
⇒ Bridge circuits using RTD in temperature measurement usually employ 3 lead system so as to obtain
higher sensitivity
better impedance matching
compensation for signal wire resistance
reduction in power consumption
⇒ The velocity factor of a transmission line
mainly depends on the skin effect
is always higher for a solid dielectric than for air
mainly depends on the dielectric constant of the material used
increases the velocity along the transmission line
⇒ A device which converts BCD to seven segment is called
encoder
decoder
multiplexer
none of these
⇒ A signal x(n) = sin(ω_{0}n + φ) is the input to a linear time invariant system having a frequency response H(e^{jω}) If the O/P of the system is Ax(n -n_{0}), then the general form of H(e^{jω}) will be
- n_{0}ω_{0} + β for any arbitrary real β
- n_{0}ω_{0} + 2pk for any arbitrary integer k
n_{0}ω_{0} + 2pk for any arbitrary integer k
- n_{0}ω_{0} + φ
⇒ Flow charts that contain decision sy
represent straight line programs
do not represent straight line programs
all of the above
none of the above
⇒ Fourier transform of f(t) =
jω F(f)
2pf F(f)
F'(f)
None
⇒ Specific resistance of silver is about
0.16 x 10^{-8} Ω-m
1.64 x 10^{-8} Ω-m
16 x 10^{-8} Ω-m
164 x 10^{-8} Ω-m
⇒ A resistance is measured by voltmeter-ammeter method. The voltmeter is 0-250V, ± 1% accuracy and ammeter is 0-5 A, ± 1 % accuracy. The readings of voltmeter and ammeter are 100 V and 2 A respectively. The error in the measured resistance can be
± 1%
± 2%
± 5%
± 10%
⇒ The number of interrupt lines in 8085 is
2
3
4
5
⇒ Which of the following is the software for financial accounting?
COBOL
MS WORD
Page maker
DB III plus
⇒ If a_{ac} for transistor is 0.98 then β_{ac} is equal to
51
49
47
45