Question is ⇒ For an antenna of height ht metres, the radio horizon is equal to, Options are ⇒ (A) 4ht metres, (B) 4ht km, (C) 2.5ht km, (D) 2.5ht metres, (E) , Leave your comments or Download question paper.

Question is ⇒ For an antenna of height ht metres, the radio horizon is equal to, Options are ⇒ (A) 4ht metres, (B) 4ht km, (C) 2.5ht km, (D) 2.5ht metres, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	For an antenna of height h_t metres, the radio horizon is equal to
A.	4h_t metres [Wrong Answer]
B.	4h_t km [Correct Answer]
C.	2.5h_t km [Wrong Answer]
D.	2.5h_t metres [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ Directivity and beamwidth is related as
D ∝ B
D ∝ 1/B
D ∝ B
D ∝ B²

⇒ Which synthesis procedure requires the use of mutual inductance?
Foster's synthesis
Cauer synthesis
Bott-Duffin synthesis
Brune's synthesis

⇒ The voltage drop per ampere-metre of an aluminium conductor is higher as compared to a copper conductor of the same size due to its higher
insulation resistance
resistivity
conductivity
current density

⇒

Assertion (A): In rectangular waveguide TE₀₁ mode is just TE₁₀ mode rotated by 90°.

Reason (R): When a rectangular waveguide is rotated by 90°, the broad and narrow dimensions get interchanged.

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

⇒ Which of the following can be operated with positive as well as negative gate voltage?
JFET
Both JFET and MOSFET
MOSFET
Neither JFET nor MOSFET

⇒ In a FM signal, the modulation index increases, then the power
increases
decreases
remains constant
none of the above

⇒

Assertion (A): The phase angle plot in Bode diagram is not affected by change in system gain.

Reason (R): The variation in gain has no effect on phase margin of the system.

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
R is correct but A is wrong

⇒ A transmission line is feeding 1 watt of power to a horn antenna having a gain of 10 dB. The antenna is matched to the transmission line. The total power radiated by the horn antenna into the free space is
10 watt
1 watt
0.1 watt
0.01 watt

⇒ (11)₂ + (11)₃ = (11)_?
4
5
6
not possible

⇒ Consider the voltage transfer characteristic of a standard CMOS inve
NMOS and PMOS triode
Both are saturation
NMOS saturated PMOS linear
None of these

⇒ Solution of Laplace equations, which are continuous through the second derivative, are called
bessel functions
odd functions
harmonic functions
fundamental functions

⇒ A MOD - 2 counter, the FF has a t_pd = 60 nsec. The NOR gate has a t_pd of 30 nsec. The clock frequency is
37 MHz
40 MHz
111 MHz
none

⇒ In a transistor receiver, the use of FET as the first stage amplifier is likely to
improve selectivity of the receiver
improve the effectiveness of the AGC
reduce the effect of negative peak clipping
reduce the effect of noise at all frequencies

⇒ The frequency deviation of a FM signal produced from PM is
identical to that of FM signal produced by direct method
larger than that of a FM signal produced by direct method
directly proportional to the peak amplitude and the frequency of modulating signal
directly proportional to the peak amplitude of the modulating signal

⇒ The simplest method of suppression of unwanted side band in AM is
filter method
phase shift method
third method
both (a) and (b)

⇒ 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

⇒ Natural commutation can be used in :
DC circuits only
AC circuits only
both AC and DC circuits
none of the above

⇒ In a display specified as 600 x 400 the number of pixels across the display screen is
600
400
240000
either (a) or (b)

⇒ Consider the following statements for a driving point function F(jω):

Re F(jω) is an even function of ω and is 0 or positive for all values of ω.
Im F(jω) is an even function of ω and is 0 or positive for all values of ω.
Re F(jω) is an odd function of ω and is 0 or negative for all values of ω.
Re F(s) = 0 for Re s = 0.

Which one of the statements given above is/are correct?
1 only
1 and 4
2, 2 and 4
4 only

⇒ In a rectangular waveguide
the broad width is generally labelled 'a' and height 'b'
the broad width is generally labelled 'b' and height 'a'
any one of the dimensions may be labelled 'a' and the other 'b'
the length is labelled as 'a'

⇒ The IF amplifier in a superheterodyne receiver is
single-stage single-timed amplifier
two stage of single tuned amplifier
double tuned amplifier
class-C amplifier

⇒ The superposition theorem is applicable to
linear, non-linear and time variant responses
linear and non-linear resistors only
linear responses only
none of the above

⇒ The state equations are in the form
X = AX + BW
X = AX + Bu
X = AX + Bx
either (a) or (b)

⇒ An arbitrary signal m (t) has zero average value and it is bandlimited to 3.2 kHz. It is sampled at the rate of 8 K samples/S. The samples are passed through an ideal bandpass filter with centre frequency of 32 kHz and bandwidth of 6.4 kHz. The output of band pass filter is
AM-DSB signal with suppressed carrier
AM-DSB signal with carrier
AM-SSB signal with carrier
a sequence of exponentially decaying sine waves

⇒ In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The image frequency at 1000 kHz will be
1010 kHz
1455 kHz
1910 kHz
545 kHz

⇒ An AC source or RMS voltage 20V with internal impedance Z_s = (1 + 2j) Ω feeds a load of impedance Z_L = (7 + 4j) Ω in the figure below. The reactive power consumed by the loa
8 VAR
16 VAR
28 VAR
32 VAR

⇒ How much is contributed by each bit in the code word of a PCM system under uniform and symmetric quantization to the signal to noise ratio?
3 dB
4 dB
5 dB
6 dB

⇒ Which of the following is true for RC impedance?
The lowest critical frequency is a pole
The lowest critical frequency is zero
The lowest critical frequency may be pole or zero
The lowest critical frequency is a pole but cannot be at s = 0

⇒ For a Mod-64 synchronous counter the number of flip flops and AND gates needed is
6 and 4 respectively
4 and 6 respectively
7 and 5 respectively
5 and 7 respectively

⇒ The open loop gain of an actual op-amp is about 100.
TRUE
FALSE