Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | In figure the output v(t) |

A. | phase modulated signal [Wrong Answer] |

B. | amplitude modulated signal [Wrong Answer] |

C. | frequency modulated signal [Correct Answer] |

D. | none of the above [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 :**

⇒ The rating of a transformer to deliver 100 watts of D.C. power to a load under half wave rectifier will be nearly

1 kVA

350 VA

175 VA

108 VA

⇒ The time constant of the network shown in figur

2 RC

5/3 RC

RC/2

None of these

⇒ A waveguide twist is used to change the plane of polarization.

TRUE

FALSE

⇒ The Lissajous pattern observed on screen of CRO is a straight line inclined at 45° to x axis. If

*X*-plate input is 2 sin ω

*t*, the

*Y*-plate input is

2 sin ω

*t*

2 sin (ω

*t*+ 45°)

2 sin (ω

*t*- 45°)

22 sin ω

*t*+ 45°)

⇒ The

*v*-

*i*characteristics of a FET is shown in figure. In which region is the device biased for small signal amplifica

AB

BC

CD

BD

⇒ Consider a multiplexer with X and Y as data inputs and Z as control input. Z = 0 selects input X and Z = 1 selects input Y. What are the connections required to realize the 2-variable Boolean function

*f*= T + R, without using any additional hardware?

R to X, 1 to Y, T to Z

T to X, R to Y, T to Z

T to X, R to Y, 0 to Z

R to X, 0 to Y, T to Z

⇒ In a diode rectifier with a capacitance input filter, a surge current is likely to flow when the circuit is switched on. The cause of this surge current is

the non linear behaviour of diodes

the capacitor acts as a short circuit at the instant of switching,

the inductance of leads

both (a) and (b)

⇒ The circuit given bel

Circuit is band stop with two edge frequency of 39.7875 Hz to 1592 Hz

Circuit is band pass with two edge frequency of 39.7875 Hz to 1592 Hz

Circuit is oscillator, oscillation at two frequencies 39.7875 Hz to 1592 Hz depending on R

_{3}, R

_{4}, R

_{5}and R

_{6}

None of these

⇒ The resonance frequency of the circui

5.4 K

*n*

_{2}

4.5 K

*n*

_{2}

5 K

*n*

_{2}

∞

⇒ A line has Z

_{0}= 300 ∠ 0° Ω. If

*Z*

_{L}= 150 ∠ 0° Ω, reflection coefficient is

0.5

0.3333

-0.3333

-0.5

⇒ Which one is correct statement?

- Circuit is always open
- Network is always open
- Circuit is always closed
- Network is always closed

1, 2

2, 3

3, 4

1, 4

⇒ Reflection from the object to be measured is significant only when the wavelength is

much bigger than the size of object

much smaller than the size of object

almost of the size of object

either (a) or (c)

⇒ In 8085 microprocessor, even after a Reset operation which of the following interrupts remains enabled?

INTR

RST 5.5

RST 7.5

TRAP

⇒

Match the following:

List I (Theorems) | List II (Property of Network) | ||
---|---|---|---|

A. | Reciprocity | 1. | Impedance matching |

B. | Tellegen's | 2. | Bilateral |

C. | Superposition | 3. | ∑ V_{jk} I_{jk} = 0 |

D. | Maximum power transfer | 4. | Linear |

5. | Non linear |

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

A-1, B-2, C-3, D-5

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

A-2, B-3, C-5, D-1

⇒ The satellites used for intercontinental communication are called

Comsat

Domsat

Marisat

Intelsat

⇒ For a type 0 system and unit ramp input, the steady state error is

0

∞

1

1/K

_{V}⇒ The Fourier series of a real periodic function has only

- Cosine terms if it is even
- Sine terms if it is even
- Cosine terms if it is odd
- Sine terms if it is odd

(1) and (4)

(1) and (2)

(2) and (4)

(2) and (3)

⇒ The system in the given figure,

good gain and phase margin

poor gain and phase margin

good gain margin but poor phase margin

poor gain margin but good phase margin

⇒ In auxiliary commutated chopper, the peak value of thyristor current is

equal to peak value of load current

equal to peak value of capacitor current

sum of peak value of load current and capacitor current

none of the above

⇒ As the viscosity of a liquid increases, the relaxation time

remains constant

increases

decreases

first decreases then increases

⇒ A leaky dielectric has ∈

_{r}= ∈

_{r}

^{'}-

*j*∈

_{r}

^{"}. If a field

*E*is applied, the current component in phase with E is proportional to ∈

_{r}

^{"}.

TRUE

FALSE

⇒ A 4 bit synchronous counter has flip flops having propagation delay of 50 ns each and AND gates having propagation delay of 20 ns each. The maximum frequency of clock pulses can be

20 MHz

50 MHz

14.3 MHz

5 MHz

⇒

Match the following:

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

A. | Word wrap | 1. | interleaved execution of two or more programs by the same computer |

B. | Client | 2. | automatically moves a word to the next line if it does not fit in the current line |

C. | Multitasking | 3. | an application receiving data |

D. | Landscape | 4. | orientation of worksheet |

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

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

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

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

⇒ The 1150 kg geosynchronous satellite INSAT-IA parked 36000 km above India had greatly improved India's

intelligence gathering capacity

domestic communications

meteorological capability

both (b) and (c)

⇒ In the FM wave described by equation

*v*= 15 sin (4 x 10

^{8}

*t*+ 3 sin 1100

*t*), the maximum frequency deviation is

175 Hz

525 Hz

3 Hz

58.33 Hz

⇒ If a transistor is operating with both of its Junctions forward biased, but with the collector base forward biased, but with the collector base forward bias greater than the emitter-base forward bias, then it is operating in the

forward active mode

reverse saturation mode

reverse active mode

forward saturation mode

⇒ An unmodulated voltage 10

*V*effective is applied to a dioxide detector in which load resistance is 4 x 10

^{-5}ohms. A micrometer shows that the rectified DC current in this resistance is 30

*A*. The efficiency of detection is

0.34

0.555

0.688

0.847

⇒ The multiplication time for 10-bit numbers with 1 MHz clock will be

32 μ sec

20 μ sec

21 μ sec

22 μ sec

⇒ A radar beacon is a small radar set having a receiver, a separate transmitter and an antenna.

TRUE

FALSE

⇒ In a resistive ac circuit, the current __________ the voltage by __________ .

lags, 90°

lags, 45°

lags, 0°

leads 90°