Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
A transmission line has Z_{0} = 300 Ω and Z_{L} = (300 - j300) ohm. The transmission coefficient is | |
A. | 1.265 ∠ - 18.43° [Correct Answer] |
B. | 1.01 ∠ - 10° [Wrong Answer] |
C. | 1.14 ∠ 66.68° [Wrong Answer] |
D. | 1.09 ∠ 66.68° [Wrong Answer] |
View Answer
Explanation:-
Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ A 'n' bit sequence generator employing SR flip-flop has maximum length of the sequence as :
2^{n}
n
2^{n} - 1
2^{n}^{-1}
⇒ Which of the following statements about the matched filter in a communication receiver are correct?
1 and 4 only
1 and 2 only
2, 3 and 4
1, 2 and 4
⇒ Which one is a linear system?
y[n] = x[n] x x[n - 1]
y[n] = x[n] + x[n - 10]
y[n] = x^{2}[n]
(a) and (c)
⇒ A radiation thermometer is suitable for temperatures
below 500°C
below 100°C
above 500°C
above 1400°C
⇒ In what condition does BJT act like an open switch
cut off
saturation
active
both (b) and (c)
⇒ A 100 + j 100 Ω load is to be matched to a line with Z_{0} = 300 Ω to give SWR = 1. The reactance of stub is
j 200 Ω
-j 200 Ω
j 100 Ω
-j 100 Ω
⇒ A full wave diode rectifier using centre tapped transformer has diodes with forward resistance of 50 ohms each. The load resistance of 50 ohms each. The load resistance is also 50 ohms. The voltage regulation is
0.2
0.5
1
2
⇒ The network shown in the figure represen
band pass filter
low pass filter
high pass filter
band stop filter
⇒ IC 74181 performs arithmetic operations when M = 1.
TRUE
FALSE
⇒
A-4, B-3, C-2, D-1
A-4, B-3, C-2, D-3
A-3, B-1, C-4, D-2
A-3, B-4, C-1, D-2
⇒ From which instant is the turn off time of a thyristor defined
when anode voltage becomes zero
when anode current becomes zero
when both anode voltage and current become zero
none of the above
⇒
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 a full wave rectifier circuit using centre tapped transformer, the peak voltage across half the secondary winding is 40 V. If diodes are ideal, the average output voltage is
40 V
25.5 V
20 V
2.55 V
⇒ In a klystron amplifier the transit time of electron passing the gap in the cavity should be
less than one cycle
less than half cycle
less than quarter cycle
more than quarter cycle
⇒ Which distortion is least objectionable in case of audio amplifiers?
Phase distortion
Frequency distortion
Harmonic distortion
Inter-modulation distortion
⇒ Which is the displacement transducer with excellent sensitivity, linearity and resolution?
Incremental encoder
Absolute encoder
LVDT
Strain gauge
⇒ The no. of comparators required in a 3 bit comparator type ADC is
2
3
7
8
⇒ Decimal number 10 is equal to binary number
1110
1010
1001
1000
⇒ The decoder for PAL system is
similar to NTSC decoder
similar to NTSC decoder supplemented by 64 ms delay line
similar to NTSC decoder supplemented by 64 ms delay line and an electronic commutator
either (b) or (c)
⇒ Among the filter, Bessel, Butterworth and chebyshev, the filter with maximally flat response is
all
butterworth
bessel
butterworth, Chebyshev
⇒ Consider the following statement in FORTRAN 772 values could be read and stored asX (0), Y (0)
4 values could be read and stored asX (0), Y (0), X (2), Y (2)
6 values could be read and stored as X (0), Y (0), Y (2), X (3), Y (3)
none of the above
⇒ In a varistor, as the voltage increases beyond a certain value, its resistance
rapidly increases
rapidly decreases
becomes negative, i.e., varistor goes into negative resistance region
none of these
⇒ For a class B amplifier using a supply of V_{CC} = 30 V and driving a load of 16 Ω the maximum efficiency will be __________ .
0.724
0.7854
0.624
0.6854
⇒
A-1, B-2, C-3, D-4
A-4, B-1, C-2, D-3
A-1, B-2, C-4, D-3
A-4, B-1, C-3, D-2
⇒ The modulating frequency in frequency modulation is increased from 10 kHz to 30 kHz. The bandwidth is increased by
6
1/6 times
increase by 30 kHz
increase by 20 kHz
⇒ Pick the odd-one out
Hartley Oscillator
Colpitt oscillator
Clapp oscillator
Weinbridge oscillator
⇒ The following switching functions are to be implemented using a decoder
2 to 4 line
3 to 8 line
4 to 16 line
5 to 32 line
⇒ If the characteristic equation is (λ + 1) (λ + 2) (λ + 3) = 0, the eigen values are
-1, -2, -3
1, 2, 3
0, 1, 2
0, 2, 3
⇒ The characteristic equation of a control system is given as s^{4} + 8s^{3} + 24s^{2} + 32s + K = 0. What is the range of values of K for this system to be stable?
0 ≤ K < 80
0 ≤ K < 100
0 ≤ K < 2300
0 ≤ K < 600
⇒ In a radar system the solution to blind speed problem is to
use MTI
use monopoles
vary PRF
change Doppler frequency
⇒ A 'n' bit sequence generator employing SR flip-flop has maximum length of the sequence as :
2^{n}
n
2^{n} - 1
2^{n}^{-1}
⇒ Which of the following statements about the matched filter in a communication receiver are correct?
- Its impulse response depends on the signed shape
- It maximizes the SNR at the detection shape.
- It produces ISI.
- It may produce phase error if synchronization is improper.
1 and 4 only
1 and 2 only
2, 3 and 4
1, 2 and 4
⇒ Which one is a linear system?
y[n] = x[n] x x[n - 1]
y[n] = x[n] + x[n - 10]
y[n] = x^{2}[n]
(a) and (c)
⇒ A radiation thermometer is suitable for temperatures
below 500°C
below 100°C
above 500°C
above 1400°C
⇒ In what condition does BJT act like an open switch
cut off
saturation
active
both (b) and (c)
⇒ A 100 + j 100 Ω load is to be matched to a line with Z_{0} = 300 Ω to give SWR = 1. The reactance of stub is
j 200 Ω
-j 200 Ω
j 100 Ω
-j 100 Ω
⇒ A full wave diode rectifier using centre tapped transformer has diodes with forward resistance of 50 ohms each. The load resistance of 50 ohms each. The load resistance is also 50 ohms. The voltage regulation is
0.2
0.5
1
2
⇒ The network shown in the figure represen
band pass filter
low pass filter
high pass filter
band stop filter
⇒ IC 74181 performs arithmetic operations when M = 1.
TRUE
FALSE
⇒
Match the following:
List I (Logic) | List II (Characteristic) | ||
---|---|---|---|
A. | RTL | 1. | High fan out |
B. | CMOS | 2. | Highest speed of operation |
C. | I^{2}L | 3. | High noise immunity |
D. | ECL | 4. | Lowest product of power and delay |
A-4, B-3, C-2, D-1
A-4, B-3, C-2, D-3
A-3, B-1, C-4, D-2
A-3, B-4, C-1, D-2
⇒ From which instant is the turn off time of a thyristor defined
when anode voltage becomes zero
when anode current becomes zero
when both anode voltage and current become zero
none of the above
⇒
Assertion (A): For Diamond, μ_{r} = 1
Reason (R): Diamond is a diamagnetic 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 but R is false
A is false but R is true
⇒ In a full wave rectifier circuit using centre tapped transformer, the peak voltage across half the secondary winding is 40 V. If diodes are ideal, the average output voltage is
40 V
25.5 V
20 V
2.55 V
⇒ In a klystron amplifier the transit time of electron passing the gap in the cavity should be
less than one cycle
less than half cycle
less than quarter cycle
more than quarter cycle
⇒ Which distortion is least objectionable in case of audio amplifiers?
Phase distortion
Frequency distortion
Harmonic distortion
Inter-modulation distortion
⇒ Which is the displacement transducer with excellent sensitivity, linearity and resolution?
Incremental encoder
Absolute encoder
LVDT
Strain gauge
⇒ The no. of comparators required in a 3 bit comparator type ADC is
2
3
7
8
⇒ Decimal number 10 is equal to binary number
1110
1010
1001
1000
⇒ The decoder for PAL system is
similar to NTSC decoder
similar to NTSC decoder supplemented by 64 ms delay line
similar to NTSC decoder supplemented by 64 ms delay line and an electronic commutator
either (b) or (c)
⇒ Among the filter, Bessel, Butterworth and chebyshev, the filter with maximally flat response is
all
butterworth
bessel
butterworth, Chebyshev
⇒ Consider the following statement in FORTRAN 77
4 values could be read and stored asX (0), Y (0), X (2), Y (2)
6 values could be read and stored as X (0), Y (0), Y (2), X (3), Y (3)
none of the above
⇒ In a varistor, as the voltage increases beyond a certain value, its resistance
rapidly increases
rapidly decreases
becomes negative, i.e., varistor goes into negative resistance region
none of these
⇒ For a class B amplifier using a supply of V_{CC} = 30 V and driving a load of 16 Ω the maximum efficiency will be __________ .
0.724
0.7854
0.624
0.6854
⇒
Match the following:
List I | List II | ||
---|---|---|---|
A. | Tangent galvanometer | 1. | Can be used for dc only |
B. | Moving coil instrument | 2. | Integrating instrument |
C. | Household energy meter | 3. | Used for voltage measurement only |
D. | Electrostatic instrument | 4. | Absolute instrument |
A-1, B-2, C-3, D-4
A-4, B-1, C-2, D-3
A-1, B-2, C-4, D-3
A-4, B-1, C-3, D-2
⇒ The modulating frequency in frequency modulation is increased from 10 kHz to 30 kHz. The bandwidth is increased by
6
1/6 times
increase by 30 kHz
increase by 20 kHz
⇒ Pick the odd-one out
Hartley Oscillator
Colpitt oscillator
Clapp oscillator
Weinbridge oscillator
⇒ The following switching functions are to be implemented using a decoder
- f_{1} = ∑m (1, 2, 4, 8, 10, 14)
- f_{2} = ∑m (2, 5, 9, 15)
- f_{3} = ∑m (2, 4, 5, 6, 7)
2 to 4 line
3 to 8 line
4 to 16 line
5 to 32 line
⇒ If the characteristic equation is (λ + 1) (λ + 2) (λ + 3) = 0, the eigen values are
-1, -2, -3
1, 2, 3
0, 1, 2
0, 2, 3
⇒ The characteristic equation of a control system is given as s^{4} + 8s^{3} + 24s^{2} + 32s + K = 0. What is the range of values of K for this system to be stable?
0 ≤ K < 80
0 ≤ K < 100
0 ≤ K < 2300
0 ≤ K < 600
⇒ In a radar system the solution to blind speed problem is to
use MTI
use monopoles
vary PRF
change Doppler frequency