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A loop antenna is a commonly used for | |
A. | radar [Wrong Answer] |
B. | direction finding [Correct Answer] |
C. | satellite communication [Wrong Answer] |
D. | all of the above [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 :
⇒ For an antenna of height h_{t} metres, the radio horizon is equal to
4h_{t} metres
4h_{t} km
2.5h_{t} km
2.5h_{t} metres
⇒ For a transistor to have-a larger β it must have and a
close to zero
close to 0.5
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nearly infinite
⇒ Ferrites are
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ferrimagnetic materials
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ensemble Average equal to time Average
ensemble Average is not equal to time Average
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⇒ Sound wave travels as
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⇒ Hollow waveguides are used as transmission lines at frequencies
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⇒ The given figure shows a pole zero diagram. The transfer function G(j1
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⇒ The intrinsic carrier concentration of silicon sample at 300 K is 1.5 x 10^{16}/m^{3}. If after doping, the number of majority carriers is 5 x 10^{20}/m^{3}. The minority carrier density is
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⇒ When subjected to alternating stresses, an insulating material is characterised by complex dielectric constant ∈^{'}_{r} - j∈^{"}_{r} . In such materials, the dielectric losses under alternating stress is proportional
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⇒ An average responding rectifier type electronic voltmeter has its scale calibrated in terms of rms value of sine wave. If 100 V peak value square wave is fed to this voltmeter, the reading will be
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Both A and R are correct and R is correct explanation of A
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⇒ As a compared to a CB amplifier, a CE amplifier has
lower current amplification
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⇒ For an antenna of height h_{t} metres, the radio horizon is equal to
4h_{t} metres
4h_{t} km
2.5h_{t} km
2.5h_{t} metres
⇒ For a transistor to have-a larger β it must have and a
close to zero
close to 0.5
close to unity
nearly infinite
⇒ Ferrites are
ferromagnetic materials
ferrimagnetic materials
ferroelectric materials
ferri-ferromagnetic materials
⇒ For Ergodic Process
ensemble Average equal to time Average
ensemble Average is not equal to time Average
ensemble Average > Time Average
ensemble Average < Time Average
⇒ The standard deviation of a set of observations is the rms value of the deviation from the arithmetic mean.
TRUE
FALSE
⇒ Sound wave travels as
longitudinal waves
transverse waves
both longitudinal and transverse waves
either longitudinal or transverse wave
⇒ A circular waveguide has an infinite set of TE and TM modes.
TRUE
FALSE
⇒ The decimal equivalent of the hexadecimal number E 5 is
279
229
327
0
⇒ μ_{0} = 8.85 x 10^{-12}F/m.
TRUE
FALSE
⇒ A Yagi antenna has a driven antenna
only
with a reflector
with one or more directors
with a reflector and one or more directors
⇒ In an AM transmitter after the modulation stage, class C amplifier
can be used
cannot be used
may be used, but it has no use
can't be determine to use
⇒ Modulation index of a AM wave is measured using oscilloscope. The display on the CRO is as shown in figure it can be concluded t
the output wave is distorted
the output wave is under modulated
the modulation index is 100%
the modulation index is 50%
⇒ If an amplifier with gain of - 1000 and feedback factor β = - 0.1 had a gain change of 20% due to temperature, the change in gain of the feedback amplifier would be
0.1
0.05
0.002
0.0001
⇒ A decade counter
counts for ten days
counts ten times faster than a binary counters
counts to 9 and reset on the next pulse
reverts on the pulse after the tenth
⇒ In a 7 segment LED display, the minimum number of segments is activated when the input decimal number is
0
1
2
3
⇒ Satellite launch sites are invariably located on Eastern seaboards to ensure that
launch takes place eastward
expenditure of propulsion fuel is reduced during plane changing
the satellite achieves circular orbit quickly
spent rocket motor and other launcher debris falls into the sea
⇒ Algebraic expression for z-transform of x[n] is X[z]... What is the algebraic expression of z-transform of e^{jω0n} x[n]?
X(Z - Z_{0})
X(e^{-jW0z})
X(e^{jω0z})
X(Z)^{jω0z}
⇒ In Z_{RC}(s) has a pole at s = 0, the first element in first Foster realization is
a capacitor
a resistor
R-C in series
either a capacitor or resistor
⇒ A single phase full bridge inverter for R-L loads needs
4 thyristors
4 thyristors and 4 diodes
4 thyristors and 2 diodes
8 thyristors
⇒ Hollow waveguides are used as transmission lines at frequencies
above 1 GHz
above 5 GHz
above 10 MHz
above 1 MHz
⇒ The given figure shows a pole zero diagram. The transfer function G(j1
0.5 ∠0
2.7 ∠- 31°
2 ∠45°
2 ∠- 67.4°
⇒ In figure, the value of R shoul
5 kΩ
50 kΩ
20 kΩ
10 kΩ
⇒ ROC of sequence x[n] = (3)^{n} ∪[n] + (4)^{n} ∪[- n - 1]
|z| > 4
3 < |z| < 4
|z| < 4
|z| > 3
⇒ The intrinsic carrier concentration of silicon sample at 300 K is 1.5 x 10^{16}/m^{3}. If after doping, the number of majority carriers is 5 x 10^{20}/m^{3}. The minority carrier density is
4.5 x 10^{11}/m^{3}
3.33 x 10^{4}/m^{3}
5 x 10^{20}/m^{3}
3 x 10^{-5}/m^{3}
⇒ When subjected to alternating stresses, an insulating material is characterised by complex dielectric constant ∈^{'}_{r} - j∈^{"}_{r} . In such materials, the dielectric losses under alternating stress is proportional
∈^{"}_{r}
both ∈^{'}_{r} and ∈^{"}_{r}
∈^{'}_{r}
(∈^{"}_{r})^{2}
⇒ Fourier transform o the function f(t) = 1 is
2p δ (ω)
p δ (ω)
δ(ω)/2p
δ(ω)/p
⇒ An average responding rectifier type electronic voltmeter has its scale calibrated in terms of rms value of sine wave. If 100 V peak value square wave is fed to this voltmeter, the reading will be
111 V
100 V
90.9 V
70.7 V
⇒ Program counter in a digital computer
counts the number of programs run in the machine
counts the number of times a subroutine
counts the number of time the loops are executed
points the memory address of the current or the next instruction
⇒
Assertion (A): In angle modulation the transmitted amplitude is constant.
Reason (R): Angle modulation has good immunity to noise and interference.
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
A is wrong but R is correct
⇒ As a compared to a CB amplifier, a CE amplifier has
lower current amplification
higher current amplification
lower input resistance
higher input resistance