Question is ⇒ Beamwidth (between first nulls) will be for an antenna at 3 MHz with directivity of 100, Options are ⇒ (A) 140°, (B) 70°, (C) 210°, (D) 60°, (E) , Leave your comments or Download question paper.

Question is ⇒ Beamwidth (between first nulls) will be for an antenna at 3 MHz with directivity of 100, Options are ⇒ (A) 140°, (B) 70°, (C) 210°, (D) 60°, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Beamwidth (between first nulls) will be for an antenna at 3 MHz with directivity of 100
A.	140° [Correct Answer]
B.	70° [Wrong Answer]
C.	210° [Wrong Answer]
D.	60° [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : A 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 :

⇒ The residual resistivity of a binary alloy at 0 K is
sum of residual resistivities of component metals
difference of residual resistivities of component metals
product of residual resistivities of component metals
dependent on the concentration of minor component in the alloy

⇒ In a transmission line, losses due to dielectric heating are
proportional to voltage and inversely proportional to Z₀
proportional to voltage and proportional to Z₀
proportional to current and proportional to Z₀
proportional to current and inversely proportional to Z₀

⇒ A circuit said to be lumped when physical dimensions of all the component are __________ .
greater compared with wavelength of electromagnetic signal
small compared with wavelength electromagnetic signal
negligible compared with wavelength of electromagnetic signal
equal compared with wavelength of electromagnetic signal

⇒ The eigen values of a skew symmetric matrix are
always zero
always pure imaginary
either zero or pure imaginary
always real

⇒ After the death of INSAT-IB, the mainstay of the entire Indian satellite network for some time to come would be
INSTELSAT-V
INSAT-ID
INSAT-2
ARABSAT

⇒ For a P-N diode, the number of minority carriers crossing the junction depends on
forward bias voltage
potential barrier
rate of thermal generation of electron hole pairs
none of the above

⇒ The range of values of a and b for which the linear time invariant system with impulse respon
|a| > 1, |b| > 1
|a| < 1, |b| < 1
|a| < 1, |b| > 1
|a| > 1, |b| < 1

⇒ The power requirements of a DRAM in active and stand by modes is about
350 mW and 5 mW respectively
350 mW each
5 mW each
350 mW and 100 mW respectively

⇒ For the system in the given fi
y_k = u_k + 0.5 y_{k - 2}
y_k = u_k + 0.5 u_{k - 2}
y_k = u_k - 0.5 y_{k - 2}
y_k = u_k - 0.5 u_{k - 2}

⇒ As the viscosity of a liquid increases, the relaxation time
remains constant
increases
decreases
first decreases then increases

⇒ In frequency modulation noise can be further reduced by
increasing deviation
reducing deviation
reducing carrier frequency
increasing signal amplitude

⇒ Which rectifier has the best ratio of rectification?
Half wave rectifier
Full wave rectifier
Bridge rectifier
Three phase full wave rectifier

⇒ In plotting line spectrum
a graph of complex number F_n versus frequency is plotted
a graph of |F_n| versus frequency is plotted
a graph of the angle of F_n versus frequency is plotted
two graphs viz |F_n| versus frequency and the phase angle of Fn versus frequency are plotted

⇒ Both X and Y plates of a CRO are excited by ac signals. The display is an ellipse which makes one rotation in 5 seconds. This means that
the frequency of one input is 5 times that of other
the difference between the frequencies of the two signals is one fifth of hertz
the difference between the frequencies of the two signals is 5 Hz
either (a) or (c)

⇒ In figure, the current after a long time after closing of switc
0.0416666666666667
0.0833333333333333
0
infinity

⇒ A two branch parallel circuit has a 20 Ω resistance and 1 H inductance in one branch and a 100 μF capacitor in the second branch. It is fed from 100 V ac supply, at resonance, the input impedance of the circuit is
500 Ω
50 Ω
20 Ω
5 Ω

⇒ PIL tube means
Picture in Line Tube
Precision in Line Tube
Pairing in Line Tube
Pattern in Line Tube

⇒ Subroutines are used in larger programs not
to increase the programming case
to reduce storage equipment
to reduce program extension time
for ease of program testing at the program development time

⇒ In a CD, the depth and width of each pit is
0.5 μm each
0.5 μm and 1 mm respectively
1 μm and 0.5 mm respectively
1 μm each

⇒ In one's complement 8 bit representation 11111111 represents
0
0
1
-1

⇒ The energy stored in a coil is 108 J. It is opened suddenly in 10 ms. The power dissipated instantaneously across the blades of switch is
108 W
1080 W
10800 W
108000 W

⇒ A Darlington emitter follower circuit is some times used in the output stage of a TTL gate in order to
increase its I_QL
reduce its I_0H
increase its speed of operation
reduce power dissipation

⇒ The energy to cause thermionic emission is supplied by heating the cathode.
TRUE
FALSE

⇒ Of the various capacitances associated with a junction transistor the gain bandwidth product is affected to maximum extend by
base collector parasitic capacitor
base collector space charge layer capacitance
base emitter space charge layer capacitance
base emitter diffusion capacitance

⇒ For a second order system the damping factor is varied from 0 to 1. The locus of poles is
a straight line on imaginary axis
a straight line on real axis
a semi circle
a circle

⇒ In figure, I_C &as
I₁
I_B
0.5 I₁
0.5 I_B

⇒ At night the ionosphere can be considered to be consisting of
D, E, F₁ and F₂ layers
D, E, F₁ layers
D, E, F₂ layers
E and F₂ layers

⇒ Figure shows the V-i characteristics of a material. The material is likely t
copper
carbon
zinc oxide
rubber

⇒ The current in a circuit with 10 Ω resistance is i = 3 + 4 sin (100 t + 45°) + 4 sin (300 t + 60°) A. The rms current and power dissipated are
41 A and 410 W
35 A and 350 W
5 A and 250 W
11 A and 1210 W

⇒ If the oscillator output is modulated by audio frequencies upto 10 kHz, the frequency range occupied by the side bands will be
711.9 kHz to 712.1 kHz
702 kHz to 722 kHz
692 kHz to 732 kHz
71.2 kHz to 71.20 kHz