Question is ⇒ Which of the following is taken as reference antenna for directive gain?, Options are ⇒ (A) Half wave dipole, (B) Elementary doublet, (C) Isotropic, (D) Infinitesimal dipole, (E) , Leave your comments or Download question paper.

Question is ⇒ Which of the following is taken as reference antenna for directive gain?, Options are ⇒ (A) Half wave dipole, (B) Elementary doublet, (C) Isotropic, (D) Infinitesimal dipole, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Which of the following is taken as reference antenna for directive gain?
A.	Half wave dipole [Wrong Answer]
B.	Elementary doublet [Wrong Answer]
C.	Isotropic [Correct Answer]
D.	Infinitesimal dipole [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : C 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 :

⇒ If S represents the carrier synchronization at the receiver and r represents the bandwidth efficiency, then the correct statement for the coherent binary PSK is
r = 0.5, S is required
r = 1.0, S is required
r = 0.5, S is not required
r = 1.0, S is not required

⇒ Breakdown in dielectric may be
electrical breakdown
thermal breakdown
electrochemical breakdown
any of the above

⇒ An impulse train is
a number of pulses
a number of pulses spaced from each other
a number of pulses all originating together
none of the above

⇒ In figure, the switch is closed at t = 0. After some time i = 6A and rate of change of current was 4A/s. The value of inducto
1 H
1.5 H
indeterminate
0.5 H

⇒ Consider the differential amplifier shown in figure. (Assume β is very hi
2 mA
1 mA
0.5 mA
3 mA

⇒ When the phase velocity of an EM wave depends on frequency in any medium, the phenomenon is called
scattering
polarization
absorption
dispersion

⇒ The conductivity of intrinsic semiconductor is given by
en_i(μ_p - μ_n)
en_i(μ_p + μ_n)
n_i(μ_p + μ_n)
n_i(μ_pμ_n)

⇒ The number of valence electrons in pentavalent impurity is
5
4
3
1

⇒ A 1 MHz sinusoidal carrier is amplitude modulated by a symmetrical square wave of period 100 μ sec. Which of the following frequencies will not be in the modulated signal?
990 kHz
1010 kHz
1020 kHz
1030 kHz

⇒ Magnetic amplifier is used for
voltage amplification
power amplification
current amplification
frequency amplification

⇒ As compared to the number of network elements in Brune synthesis, the number of network elements Bott-and Duffin in realization is
more
less
equal
any of the above

⇒ The primary function of lag compensator is to provide sufficient
gain margin
phase margin
both gain margin and phase margin
either (a) or (b)

⇒ The storage capacity of DSDD disk and DSHD disk are
1.2 MB each
360 KB each
1.2 MB and 360 KB respectively
360 KB and 1.2 MB respectively

⇒ The total number of leads in SCR, DIAC and TRIAC respectively are
3, 2, 3
2, 3, 3
3, 3, 2
3, 2, 4

⇒ The static electric field in a conductor is
zero
unity
infinity
none of the above

⇒ For a given magnetic material operating in linear mode B = 0.06 T. Assume permeability = 51, then magnetization is:
44836 A/m
46834 A/m
946 A/m
936 A/m

⇒ Which of the following codes provides parity checks?
CCITT-2
EBCDIC
ASCII
Baudot

⇒

Assertion (A): The inductance of an iron cored solenoid is not constant.

Reason (R): BH curve of an iron specimen is non-linear.

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

⇒ The addition of impurity in extrinsic semiconductor is about 1 part in 10⁸ parts.
TRUE
FALSE

⇒ In a pneumatic bellows
the input surface, output surface and side walls are corrugated
the input surface and output surface are flat but the side walls are corrugated
the input surface and side walls are flat but the output surface is corrugated
the input surface and output surface are corrugated but the side walls are flat

⇒ In 8085 microprocessor, the RST 5.5 interrupt service routine start from location
0020 H
0024 H
0028 H
002 CH

⇒ A wave trap is a
series tuned circuit
a parallel tuned circuit
either a series tuned circuit or parallel tuned circuit
none of the above

⇒ Which of the following methods can be used to measure power in a single phase circuit without using wattmeter?

One voltmeter, one ammeter
Two voltmeters, two ammeter
Three voltmeters
Three ammeters

1 and 2 only
2 and 4 only
1 and 3 only
3 and 4 only

⇒ In a complex wave, the negative half of the wave is a reproduction of the positive half wave. Then
the wave contains only fundamental and third harmonic
the wave does not contain even harmonics
the wave does not contain odd harmonics
the wave does not contain triple harmonics

⇒ An 8 bit data is to be entered into a parallel in register. The number of clock pulses required is
8
4
2
1

⇒ In a three input AND gate A = 1, B = 1, C = 0 The output Y =
ABC
ABC
ABC
ABC

⇒ As compared to AM, FM requires
narrow channel
same channel
2 to 3 times as large channel
7 to 15 times as large channel

⇒ Which of the following options is the closest in meaning to the world be
cyclic
indirect
confusing
crooked

⇒ The electron and hole concentration in a intrinsic semiconductor are n_i and P_i respectively when doped with a P type material, these change to n and P, respectively. Then
n + P = n_i + P_i
n + n_i = P + P_i
nP_i = n_iP
n_P = n_i P_i

⇒ An amplifier has an input resistance of 10 kΩ and the noise voltage is 10 μV. If two such resistances of 10 kΩ each are connected in series at the input, the total noise voltage is about
20 μV
5μV
14.14 μV
10 μV