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Q1. | If reflection coefficient is 1/5, then corresponding VSWR is given by |

A. | 1 [Wrong Answer] |

B. | 2 [Wrong Answer] |

C. | 3 [Wrong Answer] |

D. | 42796 [Correct Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ In a micro computer the control bus

transmits and receives control signals between processor and other devices

transmits and receives control signals, also sends and receives data

transmits and receives control signals, sends and receives data and transmits address of the device

none of the above

⇒ A counter displays a sequence of numbers. If a reading corresponds to the hexadecimal number F52E, the next two readings are respectively

F52F, F520

F530, F531

F52F, F530

F52F, F52G

⇒ Which of the following periodic waveforms will have only odd harmonics of sinusoidal wavef

1 and 2

1 and 3

1 and 4

2 and 4

⇒ The function Z(

*s*) has a pole at infinity if

the degree of numerator and denominator of Z(

*s*) are equal

the numerator of Z(

*s*) is one degree higher than denominator

the denominator of Z(

*s*) is one degree higher than numerator

the degree of numerator and denominator are either equal or differ by one

⇒ As per BIS, the number of accuracy classes of instrument is

5

6

7

8

⇒ If

*h*

_{1}[

*n*] = 3δ[

*n*] + δ[

*n*- 1],

*h*

_{2}[

*n*] = 2δ[

*n*] + δ[

*n*

{6, 18, 7, 4, 0, - 6, 9}

{9, 0, - 6, 21, 7, 6, 1}

{7, - 1, 3, 1, 7, 0, 6}

{9, - 6, 0, 1, 21, 7, 18, 6}

⇒ In order to enable RST 5.5, RST 6.5 and RST 7.5 interrupts, which of the following instructions are needed?

El only

SIM only

El and SIM only

None

⇒ In DTL the junction transistor serves as

inverter

buffer amplifier

both (a) and (b)

none of the above

⇒ If two network is connected in series-parallel connection then

*h*= [

*h*

_{a}] + [

*h*

_{b}]

[

*a*

_{a}] + [

*b*

_{b}]

[Z] = [Z

_{a}] - [Z

_{b}]

none

⇒ Wired AND connection can be used in TTL with totem pole output.

TRUE

FALSE

⇒ The open loop gain of an amplifier is 50 but is likely to change by 20%. If negative feedback with β = 0.1 is used, the change in gain will be about

0.2

0.1

0.04

0.0005

⇒ If the ladder reference voltage is 2 V, then minimum comparator resolution required is

0.125 V

1.25 V

12.5 V

0

⇒ Which two rows represent identical binary numbers?

A second and fourth

Fifth and eight

Third and seventh

Second and third

⇒ In a crystal

the frequencies of series and parallel resonance are equal

the frequency of series resonance is more than frequency of parallel resonance

the frequency of parallel resonance is more than frequency of series resonance

None of the above

⇒ For formation of state equations, the inductors and current sources

should be in tree

should be in cotree

may be in tree or cotree

should be in both tree and cotree

⇒ A variable reluctance tachometer has 180 teeth on rotor. The speed of shaft on which it is mounted in 1200 rpm. The frequency of output pulses is

1800 per second

3600 per second

4800 per second

5600 per second

⇒ In a rectangular waveguide there is one half wave variation of electric field across the narrow dimension and two half wave variations of electric field across wider dimension. The dominant mode is

TM

_{12}

TE

_{13}

TE

_{21}

TM

_{25}

⇒ Circular polarized waves result when

magnitudes are the same

phases are the same

magnitudes are same and phase difference is 90°

magnitudes are same and phase difference is zero

⇒ The number of flip flops required to construct a register to store number 102

_{10}in binary form is

2

4

8

10

⇒ A sheet of bakelite is inserted between the plates of an air capacitor. The capacitance will

increase

decrease

remain the same

may increase or decrease

⇒ The current gain of a transistor is the ratio of

emitter current to base current

emitter current to collector current

collector current to base current

collector current to emitter current

⇒ An FM transmitter delivers 80W to a load of 30 W when no modulation is present. The carrier is now frequency modulated by a single sinusoidal signal and the peak frequency deviation is so adjusted to make the amplitude of the second sideband is zero in the given out

84 W

97.44 W

100 W

77.44 W

⇒ While obtaining minimal SOP expression

all do not care terms are ignored

all do not care terms are treated as 1

all do not care terms are treated as 0

only such do not care terms which aid minimization are treated as 1

⇒ Which of the following terms are equivalent?

- A ⊕ B ⊕ C
- A ⊕ B ⊙ C
- A ⊙ B ⊕ C
- A ⊙ B ⊙ C

1 and 4; 2 and 3

1 and 3

2 and 3

1, 2 and 4

⇒ The first geostationary satellite was named

Intelsat I

Intelsat II

Intelsat III

Early bird

⇒ Consider the following statements as regards IF in radio receivers

- If IF is too high, poor selectivity and poor adjacent channel rejection could result
- If IF is high, tracking difficulties increase
- A very low IF makes selectivity too sharp
- As IF is decreased, image frequency rejection becomes better

1, 2, 3, 4

1, 2, 3

2, 3, 4

1, 3, 4

⇒ In a half bridge inverter the gate pulses of the two thyristors have a phase displacement of

60°

90°

120°

180°

⇒ In the diode circuit shown in figure the diodes are ideal. The impedance seen by source is

1 k ohm

2 k ohm

0.5 k ohm

infinite

⇒

Match the following:

List I (Form) | List II (Network) | ||
---|---|---|---|

A. | Cauer I | 1. | L in series arm and C in shunt arm of ladder |

B. | Cauer II | 2. | C in series arm and L in shunt arm of ladder |

C. | Foster I | 3. | Series combination of L and C in parallel |

D. | Foster II | 4. | Parallel combination of L and C in series |

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

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

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

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

⇒ When modulation index of an AM wave is increased from 0.5 to 1, the transmitted power

remains the same

increases by 25%

increases by 33.3%

increases by 50%