Question is ⇒ The radiation pattern of loop antenna is, Options are ⇒ (A) circle, (B) semicircle, (C) elliptical, (D) cardoid or Limacon, (E) , Leave your comments or Download question paper.

Question is ⇒ The radiation pattern of loop antenna is, Options are ⇒ (A) circle, (B) semicircle, (C) elliptical, (D) cardoid or Limacon, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	The radiation pattern of loop antenna is
A.	circle [Wrong Answer]
B.	semicircle [Wrong Answer]
C.	elliptical [Wrong Answer]
D.	cardoid or Limacon [Correct Answer]
View Answer 1 -1 Explanation:- Answer : D 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 maximum temperature limit of class B insulation is
90°C
105°C
120°C
130°C

⇒ For the binary number 11101000, the equivalent hexadecimal number is
F 9
F 8
E 9
E 8

⇒ Satellites used for international communication are called
cossort
domsat
marisat
intelsat

⇒ A square corner reflector is used in
radio astronomy
tv broadcast
point to point communication
all of the above

⇒ In figure, V_{0zero
5.7 V
6.9 V
12.6 V}

⇒ A 5000 W signal is attenuated by - 196 dB. The resultant signal strength is
1.26 x 10⁶ W
1.26 x 10^-2 W
1.26 x 10^-8 W
1.26 x 10^-16 W

⇒ Transconductance characteristics of JFET depict the relation between
I_D and V_GS for different value of V_DS
I_D and V_DS for different value of V_GS
V_GS and V_DS for different values of I_D
V_DS and I_D for different values of V_GS

⇒ Nyquist stability criterion uses open loop frequency response characteristics.
TRUE
FALSE

⇒

Assertion (A): An on off controller gives rise to oscillation of the output between two limits.

Reason (R): Location of a pair of poles on jω axis gives rise to self sustained oscillations in the output.

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

⇒ The resistance of series field winding is a low resistance.
TRUE
FALSE

⇒ Fastest memory cell
bubble memory
core memory
semiconductor memory
superconductor memory

⇒ Which of the following configuration has low thermal stability?
CB
CC
CE
All have identical thermal stability

⇒ A non-inverting voltage feedback amplifier is a
voltage amplifier
current amplifier
current to voltage converter
voltage to current converter

⇒ For broadcasting purpose, full AM signal is preferred to SSB signal because
it requires large bandwidth
generation of full AM is easier
detection of full AM is simpler
none of the above

⇒ A moving iron instrument can be used for dc as well as ac.
TRUE
FALSE

⇒ Regarding TASI which one of the following statements is wrong?
It snatches the channel in his speech and may allocate it to another speaker needing it.
The same speaker is reassigned a channel almost instantly when he speaks again even when the circuit is heavily loaded.
It increases the overall utilization of the transmission channel
Intercontinental callers sometimes confuse the effects of TASI with the effects of satellite delay.

⇒ If in a broadcasting studio, a 1000 kHz carrier is modulated by an audio signal of frequency range 100-5000 kHz, the width of channel is __________ kHz.
5
4.9
995
10

⇒ Radio broadcasting is a familiar example of
space multiplexing
time multiplexing
frequency multiplexing
none of the above

⇒ The effective length of an 1/2 antenna (Given R_r = 73 Ω and (A_e)_max = 0.34λ² and η = 120p) is __________ .
0.6348 λ
0.5133 λ
0.1587 λ
0.3714 λ

⇒ With negative feedback the closed loop gain is always less than open loop gain.
TRUE
FALSE

⇒ If f₁ (t) and f₂ (f) are two functions of time and a and b are constants, then
L [af₁(t) + bf₂(t)] = aF₁(s) + bF₂(s)
L [af₁(t) + bf₂(t)] = aF₁(s) - bF₂(s)
L [af₁(t) + bf₂(t)] =[aF₁(s)]/[bF₂(s]
None of the above

⇒ With respect to transmission parameters, which one of the following is correct?
A and B are dimensionless
B and C are dimensionless
A and D are dimensionless
B and D are dimensionless

⇒ An op-amp has
low input and output impedance
low input impedance and high output impedance
low output impedance and high input impedance
high output impedance and high input impedance

⇒ A push pull amplifier is a
power amplifier
voltage amplifier
current amplifier
both power and current amplifier

⇒ Which of these instruments has highest power consumption?
Dynamometer
Electrostatic
Moving coil
Hot wire

⇒ Consider the following statements as regards BPSK and QPSK:

In BPSK we deal individually with each bit of duration T_b
In QPSK we lump two bits to form a symbol
In both BPSK and QPSK signal changes occur at bit rate
In QPSK the symbol can have any one of four possible values

Which of the above statements are correct?
1, 2, 3, 4
1, 2, 3
1, 2, 4
2, 3, 4

⇒ To obtain very high I/P and O/P impedances in a feedback amplifier, the topology used is
voltage series
current series
voltage shunt
current shunt

⇒ An FM signal has modulating frequency f_m and maximum frequency deviation of δ. The bandwidth will be nearly equal to
δ
2 δ
2f_m δ
f_m δ

⇒ A load commutated chopper circuit has
one thyristor
two thyristors
four thyristors
six thyristors

⇒ In figure, the value of R shoul
12 Ω
6 Ω
3 Ω
1.5 Ω