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Consider the following statements about radar Beacon
| |
A. | All [Correct Answer] |
B. | 1 and 2 only [Wrong Answer] |
C. | 2 and 3 only [Wrong Answer] |
D. | 2 only [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 :
⇒ For formation of state equations, resistance of the circuit
should be in tree
should be in cotree
may be in tree or cotree
none of the above
⇒ In a colour TV receiver AFT stands for
Automatic Fine Tuning
Automatic Frequency Tuning
Automatic Field Tuning
Alignment Frequency Tuning
⇒ In a vacuum triode μ = r_{p}g_{m}.
TRUE
FALSE
⇒ A computer program is used to read M and print the sum 2 + 4 + 6 + 8 +.........+ 2M. If M = 9 , the print out will show the number
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18
90
100
⇒ The correct sequence of subsystem in an FM receiver is
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RF amplifier, mixer, IF amplifier, limiter, discriminator, audio amplifier
RF amplifier, mixer, limiter, discriminator, IF amplifier, audio amplifier
mixer, IF amplifier, limiter, audio amplifier, discriminator
⇒ If the frequency of a wave 20 Hz, the time period is
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⇒ In a radio receiver with simple AGC
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4, 3, 2 , 1
5, 4, 3, 2
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⇒ Consider the following statements
1, 2, 3
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⇒ The power density spectrum of noise voltage of resistor R can be expressed as
2 kTR
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⇒ In the circuit of the given figure, V_{05 V3.1 V2.5 V0}
⇒ When energy is fed into open wire transmission line the energy may get dissipated due to
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⇒ The reflection coefficient on a line is 0.2 ∠45°. The SWR is
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⇒ A parallel resonant circuit can be used
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⇒ In a single phase full wave ac regulator using two thyristors only, the gate circuits of the two thyristors
must be isolated
may or may not be isolated
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⇒ In the given figure the input is x(t) = A sin ωt. The steady state output y(tA sin (ωt + φ) where φ = tan^{-1} |G(jω)|
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⇒ The standard deviation of a set of observations is the rms value of the deviation from the arithmetic mean.
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⇒ In a self bias circuit for CE amplifier the collector supply voltage is made twice. The collector current will
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⇒ The function (sin x)/x
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⇒ A cable has an insulation resistance of 10^{10} ohms. If the length is doubled, the insulation resistance will be
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⇒ The Nyquist plot of a stable, transfer function G(s) is shown in the figure. We are interested in the stability of the closed loop system in the feedback configuration sh
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⇒ The chip 8259 is a
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⇒ Which of the following statement is correct?
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11
⇒ DC voltage of the order of a few mV can be accurately of measured by
PMMC voltmeters
moving iron voltmeter
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⇒ For formation of state equations, resistance of the circuit
should be in tree
should be in cotree
may be in tree or cotree
none of the above
⇒ In a colour TV receiver AFT stands for
Automatic Fine Tuning
Automatic Frequency Tuning
Automatic Field Tuning
Alignment Frequency Tuning
⇒ In a vacuum triode μ = r_{p}g_{m}.
TRUE
FALSE
⇒ A computer program is used to read M and print the sum 2 + 4 + 6 + 8 +.........+ 2M. If M = 9 , the print out will show the number
9
18
90
100
⇒ The correct sequence of subsystem in an FM receiver is
mixer, RF amplifier, limiter, IF amplifier, discriminator, audio amplifier
RF amplifier, mixer, IF amplifier, limiter, discriminator, audio amplifier
RF amplifier, mixer, limiter, discriminator, IF amplifier, audio amplifier
mixer, IF amplifier, limiter, audio amplifier, discriminator
⇒ If the frequency of a wave 20 Hz, the time period is
20 secs
2 secs
0.2 secs
0.05 secs
⇒ In a radio receiver with simple AGC
the highest AGC voltage is produced between stations
an increase in signal strength produces more AGC
the audio stage gain is normally controlled by AGC
the faster the time constant of AGC, more accurate the output
⇒ Choose the correct option
- Transit period is the time between two steady state
- Transient Response is the response due to internal energy stored in circuit
- Transit response is also called natural response
- Transit response arises due to presence of C and L in the circuit
- Transit is due to R, L, C in the circuit
4, 3, 2 , 1
5, 4, 3, 2
5, 4, 3, 1
5, 1, 4
⇒ Consider the following statements
- The effect of feedback is to reduce system error
- Feedback increases the system gain at one frequency but reduces the system gain as another frequency
- Feedback can cause an originally stable system to become unstable
1, 2, 3
1, 2
2, 3
1, 3
⇒ The power density spectrum of noise voltage of resistor R can be expressed as
2 kTR
1 kTR
0.5 kTR
0.25 kTR
⇒ In the circuit of the given figure, V_{05 V3.1 V2.5 V0}
⇒ When energy is fed into open wire transmission line the energy may get dissipated due to
radiation
conductor heating
dielectric heating
all of the above
⇒ Insertion of a dielectric material between the plates of an air capacitor
increases the capacitance
decreases capacitance
has no effect an capacitance
increases breakdown voltage
⇒ The reflection coefficient on a line is 0.2 ∠45°. The SWR is
0.8
1.1
1.2
1.5
⇒ A parallel resonant circuit can be used
as a high impedance
to reject a small band of frequencies
both (a) and (b)
to amplify certain frequencies
⇒ In a single phase full wave ac regulator using two thyristors only, the gate circuits of the two thyristors
must be isolated
may or may not be isolated
should be preferably, isolated
should not be isolated
⇒ In the given figure the input is x(t) = A sin ωt. The steady state output y(tA sin (ωt + φ) where φ = tan^{-1} |G(jω)|
|G(jω)| A sin [ωt + ∠G(jω)]
|G(jω)| A sin [2ωt + ∠G(jω)]
A G(jω) sin [ωt + ∠G(jω)]
⇒ The standard deviation of a set of observations is the rms value of the deviation from the arithmetic mean.
TRUE
FALSE
⇒ In a self bias circuit for CE amplifier the collector supply voltage is made twice. The collector current will
decrease
increase
remain the same
increase or decrease
⇒ Which inductor is used at high frequencies?
Cast iron cored
Sheet steel cored
Iron alloy cored
Ceramic cored
⇒ The function (sin x)/x
has a period 2p, decays with increasing x and has zeros at np, n = ± 1, ± 2
has a period p
has a period p/2
has a period 2p, decays with increasing x, is an even function and has zeros at np, n = ± 1, ± 2
⇒ A cable has an insulation resistance of 10^{10} ohms. If the length is doubled, the insulation resistance will be
2 x 10^{10} Ω
0.5 x 10^{10} Ω
10^{10} Ω
4 x 10^{10} Ω
⇒ The Nyquist plot of a stable, transfer function G(s) is shown in the figure. We are interested in the stability of the closed loop system in the feedback configuration sh
G(s) is an all-pass filter
G(s) has a zero in the right-half plane
G(s) is the impedance of a passive network
G(s) is marginally stable
⇒ As the frequency increases, the absorption of ground wave by earth's surface
decreases
increases
remains the same
either (a) or (c)
⇒ The chip 8259 is a
programmable interrupt controller
programmable peripheral interface
I/O device
memory chip
⇒ The current i(t) through a 10 Ω resistor in series with an inductance is given by i(t) = 3 + 4 sin (100t + 45°) + 4 sin (300t + 60°) Amperes. The RMS value of the current and the power dissipated in the circuit are
41 A, 410 W respectively
35 A, 350 W respectively
5 A, 250 W respectively
11 A, 1210 W respectively
⇒ Choose the correct option
var (X) = σ_{x}^{2}
σ^{2} = E(X^{2}) - μ^{2}
var (CX) = C^{2} Var (X)
all
⇒ Which of the following statement is correct?
Decimal 9 is represented as 1011 in Excess-3 code
Decimal 9 is represented as 1001 is BCD code
Decimal 10 is represented as 1100 is Gray code
Decimal 10 is represented as 1001 in binary code
⇒ Binary multiplication 1 x 0 =
1
0
10
11
⇒ DC voltage of the order of a few mV can be accurately of measured by
PMMC voltmeters
moving iron voltmeter
null balancing potentiometer
electrostatic voltmeter