Question is ⇒ For transmission-line matching over range of frequencies, it is best to use a, Options are ⇒ (A) single stub of adjustable position, (B) double stub, (C) broadband directional coupler, (D) balun, (E) , Leave your comments or Download question paper.

Question is ⇒ For transmission-line matching over range of frequencies, it is best to use a, Options are ⇒ (A) single stub of adjustable position, (B) double stub, (C) broadband directional coupler, (D) balun, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	For transmission-line matching over range of frequencies, it is best to use a
A.	single stub of adjustable position [Wrong Answer]
B.	double stub [Correct Answer]
C.	broadband directional coupler [Wrong Answer]
D.	balun [Wrong Answer]
View Answer 1 -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 :

⇒ For 200V r.m.s. value triangular wave, the peak voltage will be
200 V
222 V
280 V
346 V

⇒ Which of the following are included in the architecture of a computer?

Addressing modes, CPU
Instruction set, data formats
Secondary memory, operating system

Select the correct answer from the codes given below:
1 and 2
1 and 3
2 and 3
3 only

⇒

Assertion (A): In KVL equations involving mutually coupled circuits the sign of M terms can be positive or negative.

Reason (R): Dot convention helps in determining sign of M terms in KVL equations.

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 mechanical system shown below has its pole(s)
- K/D
- D/K
- DK
0, - K/D

⇒ An RC snubber circuit is used to protect a thyristor against :
false triggering
failure to turn on
switching transients
failure to commutate

⇒ The ripple factor of a full wave rectifier is about 0.5
TRUE
FALSE

⇒ In a power amplifier the collector current flows for 270° of the input cycle. The operations is
class A
class B
class AB
class C

⇒ The load circuit of a single phase full bridge inverter
must be underdamped
must be overdamped
may be underdamped or overdamped
may be any type of load

⇒ The work done in moving a charge Q on an equipotential line for a distance d will be
V/d
QV/d
Q.d
zero

⇒ For the wave shown in figure, the average and rms values
50 A and 57.73 A
57.73 A and 50 A
25 A and 57.73 A
57.73 A and 70.7 A

⇒ Which of the following is not an integer constant?
0
-8
1074
-8.1

⇒ A wave E_m cos (bx - ωt) is a backward wave.
TRUE
FALSE

⇒

Assertion (A): Chopper always requires forced commutation

Reason (R): Morgan chopper uses a saturable reactor.

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

⇒ If x_k = 2^k for k ≤ 0 and = 0 for k > 0 X(z) = 2/(2 - z).
TRUE
FALSE

⇒ In 8085 the instruction MOV A, M is an example of
Direct addressing
Immediate addressing
Register addressing
Register indirect addressing

⇒ In the case of a 70-MHz IF carrier for a transponder bandwidth of 36 MHz, energy must lie between MHz.
34 and 106
52 and 88
106 and 142
34 and 142

⇒

Assertion (A): For best results the system of a D'Arsonval galvanometer should be slightly under damped.

Reason (R): Degree of damping affects the time taken by the instrument to come to final position.

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

⇒ If there is phase error in the carrier signal for the detection of SSB signals, then
the output gets reduced, but a phase distortion results
the output is not reduced, but a phase distortion results
the output is not reduced, and also no distortion
the output is reduced, no phase distortion

⇒ When a semi-conductor is doped, its electrical conductivity
increases
decreases in the direct ratio of the doped material
decreases in the inverse ratio of the doped material
remains unaltered

⇒ In the given figure x_{6de(ax₁ + bx₂ + cx₃)
(a + b + c) (x₁ + x₂ + x₃) (d + e)
(ax₁ + bx₂ + cx₃) (d + e)
a b c d e (x₁ + x₂ + x₃)}

⇒ The unit for mmf is
A
Wb
T
V

⇒ Data from a satellite is received in serial form (1 bit after another). If this data is coming at a 5 MHz rate and if the clock frequency is 5 MHz how long will it take to serially load a word in a 32-bit shift register?
1.6ms
3.2ms
6.4ms
12.8ms

⇒ If quadratic equation x² - 1000x + 25 = 0 is solved using floating point arithmetic with 4 digit mantissa, the roots are
.1000 E 4 and .1000 E 4 respectively
.0000 E 4 and .0000 E 4 respectively
.1000 E 4 and .0000 E 4 respectively
None of the above

⇒

Match the following:

	List I (Diode Rectifier)		List II (Efficiency is R_f/R_L = 0.25)
A.	Half wave	1.	0.54
B.	Bridge Rectifier	2.	0.65
C.	Full wave using tapped centre transformer	3.	0.325

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

⇒

Assertion (A): A transducer needs an output measuring or display device for measuring a non electrical quantity.

Reason (R): In some transducers the output voltage is too small and needs amplification before it can be measured.

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

⇒ Consider the following stateme
1, 2 and 3
1 and 2 only
2, 3 and 4
2, 3 and 4

⇒ The PCM signal shown below uses amplitude level of +1 volt and -1 volt to represent binary symbol 0 and 1 respectively. Each code word consists of 4 bits. The sampled version of analog signal from which this PCM signal is derived
EB596
CD231
DA495
25B6A

⇒ The pole of a reactive function
lie on jω axis only
lie on negative real axis only
may lie anywhere on s plane
lie on jω axis or on negative real axis

⇒ The minimum gate current which can turn on SCR is called :
trigger current
holding current
junction current
breakover current

⇒ A capacitor is needed for an ac circuit of 230 V, 50 Hz the peak voltage rating of the capacitor should be
230 V
0.5 x 230 V
2 x 230V
230/2V