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Q1. | The channel required for FM telemetry is |

A. | same as required for AM telemetry [Wrong Answer] |

B. | smaller than that required by AM telemetry [Wrong Answer] |

C. | 100 times that required for AM telemetry [Correct Answer] |

D. | 10 times that required for AM telemetry [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 free space, line of sight propagation case, the transmission losses between transmitter and receiver increase with frequency (

*f*) as

*f*

*f*

^{2}

*f*

^{4}

*f*

^{1/2}

⇒ In a specimen of silicon steel, a field strength of 200 A/m causes a flux density of 0.5 T. In a specimen of cast iron, the same H would cause B to be

0.5 T

less than 0.5 T

more than 0.5 T

0.5 T or more or less

⇒ The advantage of using crystal oscillator is that it

requires low d.c. supply voltage

works at high frequency

gives high output voltage

gives constant frequency of oscillations

⇒ The main difference between the broadside arrays and end fire arrays is that

individual elements are fed with same current in broadside arrays and of different magnitude in end fire arrays

in broadside arrays the elements are equidistant whereas in end fire array the distance between elements increases progressively

the total number of elements in broadside array is always one and a half times that of elements in end fire arrays

in broadside array the individual elements are fed in, out of phase by 180° whereas in end fire array individual elements are fed with currents of equal magnitude but their phases vary progressively along the line in such a way as to make the entire arrangement substantially unidirectional

⇒ Between which points does UJT exhibit negative resistance characteristics

between peak and valley points

before peak point

after peak point

after valley point

⇒ In 8085 microprocessor, when TRAP interrupt is triggered program control is transferred to location

0020 H

0024 H

0028 H

002 CH

⇒ To convert JK flip flop to D flip flop

connect D to both J and K

connect D to J directly and D to K through inverter

connect D to K directly and D to J through inverter

connect D to K and leave J open

⇒ A signal is sampled at Nyquist rate

*f*= 2

_{s}*f*

_{0}. The function can be recovered from its samples only. If it is a

Periodic square wave of fundamental frequency

*f*

_{0}

Triangular wave of fundamental frequency

*f*

_{0}

Periodic sine wave of fundamental frequency

*f*

_{0}

Unit impulse function

⇒ A two winding transformer is feeding a single phase half wave rectifier circuit. The load is purely resistive. The rms value of transformer secondary current is I

_{s}and rms value of load current in I

_{rms}. Then

I

_{s}= I

_{rms}irrespective of the value of firing angle

I

_{s}= 0.5 I

_{rms}irrespective of the value of firing angle

I

_{s}= I

_{rms}if firing angle is less than 30°

I

_{s}= I

_{rms}if firing angle is more than 30°

⇒ As the ratio R

_{f}/R

_{L}increases the efficiency of a rectifier increases.

TRUE

FALSE

⇒ A circuit has two branches 1 and 2 in parallel. If |Q

_{1}| = 8 KVAR and |Q

_{2}| = 6 KVAR, the magnitude of total kvar drawn form supply will be

14 KVAR

2 KVAR

zero

14 or 2 KVAR

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | Sky wave | 1. | parasitic elements |

B. | Antenna feed | 2. | delta match |

C. | Reflector | 3. | long-wire antenna |

D. | Rhombic antenna | 4. | ionosphere |

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

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

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

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

⇒ Out of the three transforms viz. Z-transform, Laplace transform and Fourier transform

all three are used in continuous time domain

all three are used in both continuous time domain and discrete time domain

Z transform is used in continuous time domain while Laplace and Fourier transforms are used in discrete time domain

Z transform is used is discrete time domain while Laplace and Fourier transforms are used in continuous time domain

⇒ The function shown in figure, can represent a probability density function for A _______

A = 1/4

A = 1/6

A = 1/9

A = 1/2

⇒ Two resistors

*R*

_{1}= 36 Ω ± 5% and

*R*

_{2}= 75 Ω ± 5% are connected in series. The total resistance is

111 ± 0 Ω

111 ± 2.778 Ω

111 ± 5.55 Ω

111 ± 7.23 Ω

⇒ Which rectifier has the best ratio of rectification?

Half wave rectifier

Full wave rectifier

Bridge rectifier

Three phase full wave rectifier

⇒ Find R

_{L}for maximum power trans

3 Ω

1.125 Ω

4.1785 Ω

None of these

⇒ A wire is carrying current

*I*. The field intensity H at a distance

*r*from the wire

is directed towards wire

is directed away from wire

is tangential every where to a circle of radius

*r*

none of the above

⇒ The minority carrier life time and diffusion constant in a semiconducting material are 100 μs and 100 cm

^{2}/s respectively. The diffusion length of carriers is

0.1 cm

0.01 cm

0.0141 cm

1 cm

⇒

**Assertion (A):** Silicon is preferred over germanium in manufacture of semiconductor devices.

**Reason (R):** Forbidden gap in silicon is more than that in germanium.

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

⇒ The dimensions of EMF are

ML

^{2}I

^{-1}T

^{-3}

M

^{-1}T

^{-3}

ML

^{2}I

^{-2}T

^{-3}

ML

^{3}I

^{-1}T

^{-3}

⇒ In 8085, which of the following registers cannot be paired?

A

E

C

both (b) and (c)

⇒ Which of the following measurements using a dc potentiometer do not require standardisation of potentiometer?

Measurement of unknown voltage

Measurement of resistance

Measurement of unknown current

Calibration of voltmeter

⇒ A transmission line has primary constants R, L, G and C and secondary constant

*z*

_{0}and γ = (a + Jβ). If the line is loss less, then

R = 0, G ≠ 0, and a = 0

R = 0, G = a, 0 and β = |r|

G = 0, a = β

R = 0, G = 0, a = 0, β = |r|

⇒ Which one of the following is also called 'rat race'?

E plane tee

H plane tee

Magic tee

Hybrid ring

⇒ Consider the following statements

- Gunn diode can be used in combinational logic circuits.
- Gunn diode can be used in sequential logic circuits.
- Both Gunn diode and GaAs Mesfet can be used in logic circuits.

1, 2, and 3

1 and 2 only

2 and 3 only

1 and 3 only

⇒ Magnetic amplifier is used for

voltage amplification

power amplification

current amplification

frequency amplification

⇒ Find the output voltage for 011100 in a 6 bit R-2

*R*ladder D/A converter has a reference voltage of 6.5 V.

6.4 V

2.84 V

0.1 V

8 V

⇒ Consider the following expressions which indicate the step or impulse response of an initially relaxed system

- [5 - 4
*e*^{-2t}]*u*(*t*) - [
*e*^{-2t}+ 5]*u*(*t*) *d*(*t*) + 8*e*^{-2t}*u*(*t*)*d*(*t*) + 4*e*^{-2t}*u*(*t*)

1 and 3

1 and 4

2 and 4

2 and 3

⇒ A rectangular wave guide is designed to propagate at the dominant mode TE

_{10}at a frequency of 5 GHz. The cut-off frequency is 0.8 of signal frequency. The ratio of the guide width to height is 2. The dimensions of the guide are

3.75 cm, 1.875 cm

4 cm, 2 cm

8 cm, 4 cm

2.54 cm, 1.27 cm