Question is ⇒ The radiation resistance of a resonant long wire antenna of half wavelength (λ/2) is given, Options are ⇒ (A) 73 Ω, (B) 120 <span class="symbol">p</span>, (C) 377 Ω, (D) 7.3 Ω, (E) , Leave your comments or Download question paper.

Question is ⇒ The radiation resistance of a resonant long wire antenna of half wavelength (λ/2) is given, Options are ⇒ (A) 73 Ω, (B) 120 <span class="symbol">p</span>, (C) 377 Ω, (D) 7.3 Ω, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	The radiation resistance of a resonant long wire antenna of half wavelength (λ/2) is given
A.	73 Ω [Correct Answer]
B.	120 p [Wrong Answer]
C.	377 Ω [Wrong Answer]
D.	7.3 Ω [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 :

⇒ MS Access is a DBMS software.
TRUE
FALSE

⇒ In radar PRF depends on maximum range.
TRUE
FALSE

⇒ In a communication system, noise is most likely to affect the signal
at the transmitter
in the channel
in the information source
at the destination

⇒ The reverse breakdown voltage of a diode depends on the extent of doping.
TRUE
FALSE

⇒ Which of the following is a valid real constant in FORTRAN 77?
1.2 E 231
3 E - 2
-3.2 E 2.3
1.2 E 23

⇒ Electric dipole moment is expressed in debye unit.
TRUE
FALSE

⇒ Wien bridge uses
lead network
lag network
lead-lag network
Both (a) and (b)

⇒ A rectangular metal waveguide filled with a dielectric of relative permittivity ε_r = 4, has the inside dimensions 3 x 1.2 cm, the cut off frequency for the dominant mode is
2.5 GHz
5 GHz
10 GHz
12.5 GHz

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

⇒ Which of the following cannot provide as much time interval accuracy as the oscilloscope but can capture and display eight or more signals simultaneously, something that scopes cannot do?
Logic analyzer
Digital oscilloscope
Frequency analyzer
Wave analyzer

⇒ Magnesium is alloyed with conducting materials for antenna primarily with the purpose of
increasing efficiency
improving radiative power
reducing weight
increasing density

⇒

Assertion (A): The main use of Miller integrator is to generate ramp

Reason (R): An inverting amplifier can handle more than one input at the same time.

Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct

⇒

Match the following:

	List I		List II
A.	Sky wave	1.	parasitic elements
B.	Antenna feed	2.	delta match
C.	Reflector	3.	long-wire antenna
D.	Rhombic antenna	4.	ionosphere

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

⇒

Match the following:

	List I		List II
A.	p type semiconductor	1.	silicon
B.	n type semiconductor	2.	holes are majority carriers
C.	Intrinsic semiconductor	3.	electrons are majority carriers
D.	Tungsten	4.	is a metal

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

⇒ In the silicon BJT circuit shown below, assume that the emitter area of transistor Q1 is half that of transistor
0.5 mA
2 mA
9.3 mA
15 mA

⇒ Calculate the directivity of an antenna for θ_E = 30°, θ_H = 60
46
23
50
100

⇒ Evaluate the value of 2 [u (t - 1) - u (1 - 2t)] (u ( t + 1) + u (t)) at t = 3 sec.
0
4
∞
1

⇒ Calculate the stability factor and change in I_C from 25°C to 100°C for, β = 50, R_B/ R_E = 250, ΔI_C0 = 19.9 nA for emitter bias configuration.
42.53, 0.85 μA
40.91, 0.58 μA
40.91, 0.58 μA
41.10, 0.39 μA

⇒ In a class C operation V_CC = 40 V, R_L = 50 Ω. The maximum load power can be
64 W
32 W
16 W
8 W

⇒ In the NMOS inverter
the driver and achieve load are enhancement type
the driver is enhancement type and load depletion type
both driver and load are depletion type
the driver and load are depletion type

⇒ The dimensions of permittivity are
L^-3M^-1T²Q²
L^-1M^-1T²Q²
L²MT^-1Q^-1
L^-2M^-1T²Q²

⇒

Match the following:

	List I (Instrument)		List II (Measured quantity)
A.	Hot wire	1.	only voltage
B.	PMMC	2.	phase
C.	Electrostatic	3.	true RMS value
D.	Lock in Amplifier	4.	dc value

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

⇒ Which of the following is anti-ferromagnetic material?
CrSb
NIO
MnO
All of the above

⇒

Assertion (A): In p type semiconductor conduction is mainly due to holes.

Reason (R): In p type material the holes are majority carriers.

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 pulse train can be delayed by a finite number of clock periods by using
serial in-serial out shift register
parallel in serial out shift register
serial in-parallel out shift register
parallel in parallel out shift register

⇒ A resistance of 5 ohms is connected in one branch of a network. The current in this branch is 2.2. A. If the resistance is increased to 7.5 Ω, the remaining circuit being the same, the current in this branch will be
2.2 A
less than 2.2 A
2.2 A or less than 2.2 A
2.2 A or less or more than 2.2 A

⇒ The charge per proton is
1.6 x 10^-19 C
2.6 x 10^-19 C
0.6 x 10^-19 C
1.6 x 10^-13 C

⇒ Waveform shown in figure is that
FM
PCM
AM-DSB
AM-SSB

⇒ An op-amp uses
RC coupling
direct coupling
transformer coupling
either (b) or (c)

⇒ A Yagi antenna has a driven antenna
only
with a reflector
with one or more directors
with a reflector and one or more directors