Question is ⇒ To make antenna more directional, either its size must be increased or, Options are ⇒ (A) the number of its feed horns must be increased, (B) the frequency of its transmission must be increased, (C) its effective isotropic radiated power (EIRP) must be increased, (D) its footprint must be increased, (E) , Leave your comments or Download question paper.

Question is ⇒ To make antenna more directional, either its size must be increased or, Options are ⇒ (A) the number of its feed horns must be increased, (B) the frequency of its transmission must be increased, (C) its effective isotropic radiated power (EIRP) must be increased, (D) its footprint must be increased, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	To make antenna more directional, either its size must be increased or
A.	the number of its feed horns must be increased [Wrong Answer]
B.	the frequency of its transmission must be increased [Correct Answer]
C.	its effective isotropic radiated power (EIRP) must be increased [Wrong Answer]
D.	its footprint must be increased [Wrong Answer]
View Answer 7 -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 :

⇒ Gold is often diffused into silicon P-N junction devices to
increase recombination rate
reduce recombination rate
make silicon a direct gap semiconductor
make silicon semimetal

⇒ Which chopper circuit operates in all the 4 quadrants?
A
C
D
E

⇒ The total bandwidth needed for an AM signal at 55.25 MHz with 0.5 MHz video modulation is
0.25 MHz
0.5 MHz
1 MHz
10 MHz

⇒ If f₁ and f₂ and half-power frequency and f₀ be resonant frequency, the selectivity of R-L-C series circuit is given by
(f₂ - f₁)/2f₀
(f₂ - f₁)/f₀
(f₂ - f₀)/(f₁ - f₀)
(f₂ - f₁)/(f₁ - f₀)

⇒ In the given figure the reflected voltage wave after first reflectio
18 V
-18 V
30 V
-30 V

⇒ A circuit has two branches in parallel and each branch has only one element. The applied voltage and source current are v = 200 sin (200t + 30°) and i = 50 sin (200t + 50°). If one branch has capacitor, the other branch contains
resistance
inductance
capacitance
resistance or capacitance

⇒ The damping ratio of a pair of complex poles when expressed in terms of angle θ measured from jω axis equal to
sin θ
cos θ
tan θ
cot θ

⇒ A memory chip has 65536 cells in it. Then
time required to access cell is same as that to access cell 65536
time required to access cell is less than that required to access cell 65536
time required to access cell is more than that required to access cell 65536
either (a) or (b)

⇒ In a one pole active low pass filter, the cut off frequency is f_c. Then
gain decreases at the rate of 20 dB per decade increase in frequency above f_c
gain decreases at the rate of 20 dB per decade decrease in frequency below f_c
gain decreases at the rate of 40 dB per decade increase in frequency above f_c
gain decreases at the rate 40 dB per decade decrease in frequency below f_c

⇒ The first column of a Routh arra
2
3
4
5

⇒ Which dc servomotor has minimum inertia?
Slotted armature construction
Surface wound armature
Surface wound with stationary rotor
Either (a) or (b)

⇒ Barkhausen criterion of oscillation is
Aβ > 1
Aβ = 1
Aβ = < 1
Aβ ≤ 1

⇒ If transfer function of a system is H(z) = 6 + z^-1 + z^-2 then system is
minimun phase
maximum phase
mixed phase
none

⇒ Floating gate is fabricated for making MOS
ROM
PROM
EPROM
EAROM

⇒ When transistor is used as a switch __________ is defined as the interval which elapses between the transition of input waveform and the time when to transition to 90% of I_c(sat).
storage time
fall time
turn-on time
turn-off time

⇒ An LED has a rating of 2 V and 10 mA. It is used along with 6V battery. The range of series resistance is
0 to 200 Ω
200 - 400 Ω
200 Ω and above
400 Ω and above

⇒ For very low frequencies, v₀/v_i in the given figure eq
1
0
∞
0.5

⇒ A presettable counter with 4 flip flops can start counting from
0
1000
any number from 0000 to 1000
any number from 0000 to 1111

⇒

Match the following:

	List I (Microwave device)		List II (Application)
A.	Reflex Klystron	1.	Wideband amplification
B.	TWT	2.	Very low power amplification
C.	Cavity Klystron	3.	Low power FM generation
D.	Maser	4.	Frequency multiplication

A-1, B-2, C-3, D-4
A-4, B-3, C-2, D-1
A-3, B-4, C-1, D-2
A-3, B-1, C-4, D-2

⇒ For the collector-feedback amplifier shown below the voltage gain A_v will be _________
-113.07
-103.07
-107.07
-93

⇒ A capacitor stores 0.15C at 5 V. Its capacitance is
0.75 F
0.75 μF
0.03 F
0.03 μF

⇒ The feedback technique employed in the following circuit
voltage series feedback
current series feedback
voltage shunt feedback
current shunt feedback

⇒ In an inverting amplifier using op-amp the current input to the inverting terminal
is equal to the current through feedback resistance
is less than the current through feedback resistance
is more than the current through feedback resistance
may be equal to, less or more than current through feedback resistance

⇒

Assertion (A): Two transistors one n-p-n and the other p-n-p are identical in all respects (doping, construction, shape, size). The n-p-n transistor will have better frequency response.

Reason (R): The electron mobility is higher than hole mobility.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true

⇒ A voltage multiplier circuit, using diodes and capacitors is suitable for
high voltage high current device
high voltage low current device
low voltage low current device
low voltage high current device

⇒ The intermediate frequencies in VCR are
video 38.9 MHz and audio 33.4 MHz
38.9 MHz for both video and audio
33.4 MHz for both video and audio
33.4 MHz for video and 38.9 MHz for audio

⇒ Sparking affects amplitude modulation.
TRUE
FALSE

⇒ To measure an emf by dc potentiometer it is necessary to standardise the potentiometer with the help of a standard cell.
TRUE
FALSE

⇒ Which one of the following is an indirect way of generating FM?
Armstrong modulator
Varactor diode modulator
Reactance FET modulator
Reactance bipolar transistor modulator

⇒ If f(t) is an even function, the coefficients F_n in the exponential form of Fourier series
are real
are imaginary
are complex
may be real or imaginary