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Q1. | The maximum signal propagation time of a geosynchronous satellite transmission is about __________ millisecond. |

A. | 540 [Wrong Answer] |

B. | 270 [Correct Answer] |

C. | 135 [Wrong Answer] |

D. | 1080 [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss 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 case of the circuit shown in the figure V

_{io}= 10 mV dc maximum, the maximum possible output offset voltage V

_{oo}caused by the input offset voltage V

_{io}with respect to groun

60 mV dc

110 mV dc

130 mV dc

150 mV dc

⇒ For a series resonant circuit at low frequency circuit impedance is __________ and at high frequency circuit impedance is _______

capacitive, inductive

inductive, capacitive

resistive, inductive

capacitive, resistive

⇒ For low impedance SAW filter the most suitable material for substrate of SAW filter is

PZT ceramics

ZnO

Lithium titanate

Lithium neobate

⇒ By what name is the equation Δ . J = 0 frequency known?

Poisson's equation

Laplace's equation

Continuity equation for steady currents

Displacement equation

⇒ For Bode plot of (1 +

*j*ωT) has

slope of 20 dB/decade and phase angle + tan

^{-1}(ωT)

slope of - 20 dB/decade and phase angle + tan

^{-1}(ωT)

slope of 20 dB/decade and phase angle - tan

^{-1}(ωT)

slope of - 40 dB/decade and phase angle - tan

^{-1}(ωT)

⇒ Find resistance R

_{B}to bring transistor to threshold of saturation V

_{CB}= 0, V

_{BE}= 0.7 V, a =

1.5 kΩ

15 kΩ

10 kΩ

1 kΩ

⇒ In a semi-conductor diode, the barrier offers opposition to

holes in P-region only

free electrons in N-region only

majority carriers in both regions

majority as well as minority carriers in both regions

⇒ Which of the following is the poorest conductor of electricity?

Copper

Aluminium

Manganin

Nichrome

⇒ Which device changes serial data to parallel data?

Counter

Multiplexer

Demultiplexer

Flip flop

⇒ In the figure shown, assume that all the capacitors are initially unchanged and V

_{i}(

*t*) = 10 U(

*t*) volts then V

_{0}(

*t*) is give

8

*e*

^{-0.004t}volts

8 (

*j*-

*e*

^{-0.004t}) volts

8

*u*(

*t*) volts

8 volts

⇒ A loss less line of characteristic impedance Z

_{0}is terminated in pure reactance of -

*j*

*Z*

_{0}value. VSWR is

10

2

1

infinity

⇒ McMurray Bedford full bridge inverter uses

natural commutation

auxiliary commutation

complementary commutation

any of the above

⇒ A magnetic field exists around

moving charges

static charges

iron

copper

⇒ FM transmitting and receiving equipment as compared to AM equipment is

costly

cheaper

almost equally costly

none of the above

⇒ Consider the following features of 'structures' in C?

- The values of a structure variable can be assigned to another structure variable of the same type using the assignment operator.
- One structure can be nested within another structure.
- A variable structure can also be passed to a function.

All

1 and 2 only

1 and 3 only

2 and 3 only

⇒ For the ring oscillator shown in the figure, the propagation delay of each inverter is 100 pico sec. What is the fundamental frequency of the oscillator output _______

10 MHz

100 MHz

1 GHz

2 GHz

⇒ Which part of radio spectrum is more crowded?

Lower frequency part

Higher frequency part

Both (a) and (b)

None of these

⇒ A frequency multiplier stage should operate as

class A

class AB

class C

either of the above

⇒ In metals, the average drift velocity of electron per unit field is called mobility.

TRUE

FALSE

⇒ A rectangular waveguide measures 3 x 4.5 cm internally and has a 10 GHz signal propagated in it. Calculate the guide wavelength for dominant mode.

13.5 m

3 m

88/3 m

3/88 m

⇒ Given below a block diagram of oscillator circuit with various reactance elemen

*x*

_{1}= C,

*x*

_{2}= L,

*x*

_{3}= C

*x*

_{1}= C,

*x*

_{2}= L,

*x*

_{3}= L

*x*

_{1}= C,

*x*

_{2}= C,

*x*

_{3}= L

*x*

_{1}= L,

*x*

_{2}= C,

*x*

_{3}= L

⇒

*e*

^{-3}

*is a*

^{t}energy signal

power signal

Both (a) and (b)

none

⇒ A + 1.9 lens has a focal length of 25 mm. The diameter of lens is about

13 mm

1.3 mm

130 mm

none of the above

⇒ Maximum power transfer theorem is applicable to circuits with one source only.

TRUE

FALSE

⇒ E

_{G}for silicon is 1.12 eV and that for germanium is 0.72 eV. Therefore, it can be concluded that

the conductivity of silicon will be less than that of germanium at room temperature

the conductivity of silicon will be more than that of germanium at room temperature

the conductivity of two will be same at 60°C

the conductivity of two will be same at 100°C

⇒ An RLC series circuit has a variable inductance. The value of L for resonance conditions at fundamental frequency is 0.18 H. For resonance conditions at third harmonic frequency the value of inductance is

0.54 H

0.06 H

0.02 H

1.62 H

⇒ A dc circuit breaker must use

natural commutation

forced commutation

both natural and forced commutation

either natural or forced commutation

⇒ For the signal flow graph of the given figure consider the following statements

- It has three forward paths
- It has three individual loops
- It has two non touching loops

1, 2, 3

1, 2

2, 3

1, 3

⇒ A coil has a designed for high Q performance at a rated voltage and a specified frequency. If the frequency of operation is doubled, and the coil is operated at the same rated voltage, then the Q factor and the active power P consumed by the coil will be affected as follows.

P is doubled, Q is halved

P is halved, Q is doubled

P remains constant, Q is doubled

P decreases 4 times, Q is doubled

⇒

**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