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Q1. | The main advantage of TDM over FDM is that it |

A. | needs less power [Wrong Answer] |

B. | needs less bandwidth [Wrong Answer] |

C. | needs simple circuitry [Correct Answer] |

D. | gives better S/N ratio [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 :**

⇒ Refraction of electromagnetic waves occurs when they

pass through a small slot in a conducting plane

pass into a medium of different dielectric constant

are polarized at right angles to the direction of propagation

encounter a perfectly conduction surface

⇒ The ac motor used in servo applications is

single phase induction motor

two phase induction motor

3 phase induction motor

synchronous motor

⇒ Typical size of digital IC is about

1″ x 1″

2″ x 2″

0.1″ x 0.1″

0.001″ x 0.001″

⇒ In a waveguide if TE mode exist for

*z*direction propagation, then

E

_{z}= 0, H

_{z}≠ 0

E

_{z}= 0, H

_{z}= 0

E

_{z}≠ 0, H

_{z}= 0

E

_{z}≠ 0, H

_{z}≠ 0

⇒ The output

*y*(

*t*) of a linear time invariant system is related to its input

*x*(

*t*) by the following equation

*y*(

*t*) = 0.5

*x*(

*t*-

*t*

*+ 1) +*

_{d}*x*(

*t*-

*t*

*) + 0.5*

_{d}*x*(

*t*-

*t*

*+ 7). The filter transfer function*

_{d}*H*(ω) of such a system is given by

(1 + cos ωt)

*e*

^{-jωt}

*d*

(1 + 0.5 cos ωt)

*e*

^{-jωt}

*d*

(1 + cos ωt)

*e*

^{jωt}

*d*

(1 - 0.5 cos ωt)

*e*

^{-jωt}

*d*

⇒ For a BJT, avalanche multiplication factor depends on

V

_{CE}

V

_{CB}

V

_{BE}

none

⇒ A microwave link uses only line-of-sight propagation.

TRUE

FALSE

⇒ The electric energy required to raise the temperature of a given amount of water is 1000 kWh. If heat losses are 25%, the total heating energy required is __________ kWh.

1500

1250

1333

1000

⇒ Consider the following as regards cumulative disribution function F(

*x*)

- 0 ≤ F(
*x*) ≤ 1 - F(- ∞) = 0
- F(∞) = 1
- F(
*x*_{1}) ≤ F(*x*_{2}) If*x*_{1}<*x*_{2}

1 and 2 only

1, 2 and 3 only

1, 2, 3 and 4

2 and 4

⇒ A radiation thermometer is suitable for temperatures

below 500°C

below 100°C

above 500°C

above 1400°C

⇒ The storage capacity of a CD is

360 k bytes per side

360 M bytes per side

540 k bytes per side

540 M bytes per side

⇒ Which of the following modes in circular waveguides are circularly symmetric?

TE

_{01}

TE

_{02}

both (a) and (b)

neither (a) nor (b)

⇒ In a 3 phase system, the zero sequence component of line to line voltages is zero

if line to line voltages are balanced

if line to line voltages are unbalanced

if line to line voltages are balanced or unbalanced

if degree of unbalanced in line to line voltages is small

⇒ Compact discs use

magnetic recording and retrieval

optical recording and retrieval

optical recording but magnetic retrieval

magnetic recording but optical retrieval

⇒ Which of the following terminations makes the input impedance of a line equal to characteristic impedance Z

_{0}?

line open circuited at far end

line terminated in Z

_{0}

line short circuited at far end

line terminated in inductance

⇒ Permeance is analogue to

reluctance

conductance

capacitance

resistance

⇒ In VHS format each video head is tilted from azimuth by

20°

10°

6°

1°

⇒ The pre-emphasis in FM aids in providing extra noise immunity by

emphasizing only the higher frequency components

emphasizing the entire frequency band

emphasizing only the lower frequency band

cutting down the low frequency noise

⇒ If V

_{a1}= V

_{a2}= 100 V and V

_{a0}= 0, then V

_{a}, V

_{b}, V

_{c}are

200, -100 and -100 V

100, 100, 300 V

200, 100, 100 V

100, -100, 100 V

⇒ For type 0 system the starting point (

*i.e.*ω = 0) of polar plot is finite and is on positive real axis.

TRUE

FALSE

⇒ It is necessary to measure the amplitudes of two signals and also the phase difference between them. This can be done by using a

phase meter

waveform meter

vector voltmeter

digital voltmeter

⇒ A wave is propagated in a waveguide at frequency of 9 GHz and separation is 2 cm between walls calculate the phase velocity for dominant mode.

3 x 10

^{8}m/sec

5 x 10

^{8}m/sec

1.5 x 10

^{8}m/sec

9 x 10

^{8}m/sec

⇒ In standard TTL the totem pole stage refers to

multiemitter input stage

phase splitter

output buffer

open collector output stage

⇒ At a given probability of error, binary coherent FSK is interior to binary coherent PSK by

6 dB

3 dB

2 dB

0 dB

⇒ In figure the phase

will be 90° at ω = 0 and 0° at ω = ∞

will be 0° at ω = 0 and 90° at ω = ∞

will be 45° at ω = 0 and 0° at ω = ∞

will be 45° at ω = 0 and 90° at ω = ∞

⇒ As a compared to a CB amplifier, a CE amplifier has

lower current amplification

higher current amplification

lower input resistance

higher input resistance

⇒

**Assertion (A):** If power gain doubles the power gain increases by 3 dB

**Reason (R):** The bel power gain of cascaded stages is equal to sum of each bel power gain

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

⇒ Consider the cascade structure of two filte

1 and 3

only 2

2 and 3

only 3

⇒ A steel bar needs 1200 AT to magnetise it. The voltage that must be applied to the magnetising coil of 100 turns and 10 Ω resistance is __________ volt.

120

12

1200

10

⇒ In a digital counter the number of flip-flops is

always 2

always even

always odd

equal to the number of bits required in the final binary count