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Q1. | The baud rate is |

A. | not equal to signalling rate [Wrong Answer] |

B. | always equal to bit transfer rate [Wrong Answer] |

C. | equal to twice the bandwidth of an ideal channel [Correct Answer] |

D. | equal to half the bandwidth of ideal channel [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ In the given figure the phase angle of F

*n*is either 0 or &

TRUE

FALSE

⇒ The bidirectional pattern of a broadside array can be converted into unidirectional by

maintaining the distance of λ/4 between the elements

maintaining the distance of λ/2 between the elements

installing an identical array behind the main array at distance λ/4 and exciting it by current leading in phase by 90°

installing an identical array behind the main array at distance λ/2 and exciting it by current leading in phase by 120°

⇒ The characteristic equation of a feedback control system is given by

*s*

^{3}+ 5

*s*

^{2}+ (K + 6)

*s*+ K

(- 3, 0)

(- 2, 0)

(- 1, 0)

(2, 0)

⇒ The load end of a quarter wave transformer gets disconnected thereby causing an open-circuited load. What will be the input impedance of the transformer?

Zero

Infinite

Finite and Positive

Finite and Negative

⇒ Which of the following is abnormal variation in ionosphere?

Diurnal variation

Seasonal variation

Ionospheric storms

None of the above

⇒ The resistance in the circuit of the moving coil of a dynamometer wattmeter should be

very low

low

high

almost zero

⇒ Consider the following stateme

1 only

1 and 2

2 and 3

3 only

⇒ 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

⇒ One of a loss-less transmission line having the characteristic impedance of 75 Ω and length of 1cm is short-circuit. At 3 GHz, the input impedance at the other end of the transmission line is

0

resistive

capacitance

inductive

⇒ A depletion type NMOS is operated in enhancement mode. V

_{p}= - 4 volts. For V

_{GS}= + 3 volts as V

_{DS}is increased, I

_{D}becomes nearly constant when V

_{ps}equals

1 volt

3 volts

4 volt

7 volts

⇒ The current wave of figure, is passed through a 3 H inductor during the period 0 to 2 sec

is 3 V

is 6 V

increases from 0 at

*t*= 0 to 6 V at

*t*= 2 seconds

increases from 0 at

*t*= 0 to 6 V at

*t*= 2 seconds and then decreases

⇒ Which of the following is used as switch?

J-K flip-flop

Master slave J-K flip-flop

T-flip-flop

D-flip-flop

⇒ If A = 16 ∠64°, (A)

^{0.5}is

4∠64°

4∠8°

4∠128°

4∠32°

⇒ In a single phase full wave regulator feeding a resistive load, the average current over one full cycle

is always zero

cannot be zero

may be sometimes zero

is always positive

⇒ A power factor meter has

one current and one pressure circuit

one current circuit and two pressure circuits

two current circuits and two pressure circuits

two current circuits and one pressure circuit

⇒ D/A converters are generally

weighted resistor network

binary ladder network

either (a) or (b)

neither (a) nor (b)

⇒ To protect the diodes in a rectifier and capacitor input filter circuit it is necessary to use

surge resistor

surge inductor

surge capacitor

both (a) and (b)

⇒ In amplitude modulation

the amplitude of carrier varies in accordance with the amplitude of the modulating signal.

the modulating frequency lies in the audio range

the amplitude of the carrier remains constant

the amplitude of the carrier varies in accordance with the frequency of the modulating signal.

⇒ The characteristics of a non-linear resistance is

*i*=

*kv*

^{4}. If

*i*becomes 100 times,

*v*becomes

about 100 times

about 10 times

about 3 times

about twice

⇒ The signal m(

*t*) = 10 cos 100 p

*t*is sampled at the rate of F

_{s}= 75 H

_{z, }then determine signal after sampling.

4 cos 100 p

*t*+ 8 sin 200 p

*t*

4 cos 100 p

*t*+ 8 sin 200 p

*t*+ cos 75 p

*t*

4 cos 25 p

*t*+ 8 sin 50 p

*t*+ cos 75 p

*t*

none

⇒ In an induction wattmeter, the shading bands are made of non conducting material.

TRUE

FALSE

⇒ A digital voltmeter can count from 0 to 9999. If full scale reading is 9.999 V, the resolution of full scale reading is

0.001

1000

2 digit

1 mV

⇒ A signal is

*x*+

*f*(

*t*) where

*x*is constant and

*f*(

*t*) is a power signal with zero mean value. The power of the signal is

*x*

^{2}

*x*

^{2}+

*f*

^{2}(

*t*)

more than

*x*

^{2}+

*f*

^{2}(

*t*)

less than

*x*

^{2}+

*f*

^{2}(

*t*)

⇒ If a two port network is represented by an equivalent T network the admittance of series arm in term of ABCD parameter is equal to

C

1/C

(A - 1)/B

1/B

⇒

**Assertion (A):** A decrease in temperature increases the reverse saturation current in a *p*-*n* diode.

**Reason (R):** When a diode is reverse biased surface leakage current flows.

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

⇒ To measure dielectric loss you would use

Anderson bridge

Kelvin bridge

Schering bridge

Maxwell's bridge

⇒ A dc separately excited motor has constant field current. The armature is fed from a single phase supply through a full converter. When a = 0, speed is 500 rpm. If a = 45°, the speed is likely to be

about 350 rpm

about 250 rpm

about 175 rpm

about 125 rpm

⇒ Resistivity of hard drawn copper is

less than that of annealed copper

more than that of annealed copper

same as that of annealed copper

decreasing when temperature increases

⇒ A periodic voltage has following values for equal time intervals changing suddenly from one value to next, 0, 5, 10, 20, 50, 60, 50, 20, 10, 5, 0, -5, -10 etc. then rms value of the waveform is

31 volt

32 volt

insufficient data

none

⇒ As compared to a BJT amplifier circuit, a JFET amplifier circuit

has low input impedance

has high input impedance

has very low input impedance

may have either low or high input impedance