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. | An RC impadence function has a pole at s = 0. The first element in the Foster form of synthesis |

A. | is R [Wrong Answer] |

B. | may be R and C [Correct Answer] |

C. | is C [Wrong Answer] |

D. | is R and C in parallel [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 :**

⇒ For a sine wave the average value is calculated over half the cycle.

TRUE

FALSE

⇒ Magnetic field intensity has the dimensions

IL

I

^{2}L

IL

^{-1}

IL

^{-2}

⇒ The snubber circuit consists of

a capacitor connected in series with thyristor

a capacitor connected in parallel with thyristor

a resistor and capacitor in series connected across thyristor

none of the above

⇒ An

*m*derived low pass filter has

*f*

_{c}= 1000 Hz and

*m*= 0.6. This filter will have infinite attenuation at

*f*= 1250 Hz

all frequencies above 1000 Hz

*f*= 1562.5 Hz

*f*= 1666.67 Hz

⇒ 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

⇒

Match the following:

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

A. | Detection of a periodic signal in noise | 1. | Increase in band-width |

B. | Recovery of a band limited signal from its uniformly sampled values | 2. | Slope over load error |

C. | Finer quantization | 3. | Nyquist rate of signals |

D. | Delta modulation | 4. | Cross correlation |

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

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

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

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

⇒ The three sides of an admittance triangle denote

G, B, Y

R, X, Y

G, B, Z

(R, Y, Z) or (R, X, Z)

⇒ In 8085 microprocessor, what is the length of status Word?

6 bits

8 bits

12 bits

16 bits

⇒ Two wattmeter method is suitable only for balanced loads.

TRUE

FALSE

⇒ The contents of the program counter after the call operation wil

(30F0)

_{H}

(40F0)

_{H}

(50F0)

_{H}

(60F0)

_{H}

⇒ For generating 1 MHz frequency signal, the most suitable circuit is

phase shift oscillator

weinbridge oscillator

colpitt's oscillator

clapp oscillator

⇒ The characteristic impedance of a twin wire feeder used for TV signals is about

1000 ohm

500 ohm

300 ohm

100 ohm

⇒ What is the numerical aperture an optical fiber when critical angle is 30°?

0.5

0.704

0.866

0.2

⇒ Which is correct for a driving point function?

If the real part of a pole or zero is zero, that pole must be simple

If the real part of a pole or zero is zero, that pole or zero must be simple

If the real part of a zero is zero, that pole or zero must be simple

If the real part of a zero is zero that zero must be simple

⇒

**Assertion (A):** For large signal variations an amplifier circuit has to be analysed graphically

**Reason (R):** The output characteristics of a transistor is nonlinear.

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 following applications

- Switch
- Attenuator
- Phase shifter
- Oscillator

1 2 3 and 4

1 2 and 3 only

1 and 2 only

2, 3 and 4 only

⇒ In phase shift keying the input signal is

*s*

_{t}(

*t*) = A cos ω

_{0}

*t*and

*s*

_{2}(

*t*) = - A cos ω

_{0}

*t*

*s*

_{1}(

*t*) =

*s*

_{2}(

*t*) = A cos ω

_{0}

*t*

*s*

_{1}(

*t*) = A cos ω

_{0}

*t*and

*s*

_{2}(

*t*) = A cos (ω

_{0}

*t*+ p/2)

*s*

_{1}(

*t*) = A cos ω

_{0}

*t*and

*s*

_{2}(

*t*) = - A (cos ω

_{0}

*t*+ p/2)

⇒ For an n-channel enhancement type MOSFET, if the source is connected at a higher potential than that of the bulk (V

_{SB}> 0), the threshold voltage V

_{T}of the MOSFET will

remain unchanged

decrease

change Polarity

increase

⇒ Windows have a user friendly program called 'Front Page Express' for creating web pages.

TRUE

FALSE

⇒ A temperature sensistive transducer is subjected to sudden temperature change. It takes 10 seconds for transducer to reach equilibrium condition (five times time constant). The time taken to reach half of temperature difference will be

1.38

*s*

5

*s*

8.62

*s*

0.9

*s*

⇒ If a system is to follow arbitrary inputs accurately the bandwidth should be

large

small

very small

neither small nor large

⇒ The sum of two sine waves of different frequencies is a sine wave.

TRUE

FALSE

⇒ Decimal 1932 when converted into 10's complement will become

8868

8060

8608

8806

⇒ The 8086 arithmetic instruction work on

- signed and unsigned numbers
- ASCII data
- unpacked BCD data

1 and 2

1 and 3

2 and 3

1, 2 and 3

⇒ System satellites orbit the Earth once in

24 hours

12 hours

1 hours

6 hours

⇒ Which dc servomotor requires strongest permanent magnet?

Slotted armature

Surface wound armature

Surface wound with stationary rotor

Either (a) or (b)

⇒ In which of the following devices can the operation be visualised in terms of a series feedback loops?

TWT

Reflex klystron

Klystron amplifier

Backward wave oscillator

⇒ Which of the following amplifiers has highest output impedance?

CE

CB

CC

Push pull

⇒ The log magnitude for the system in the given figure is (where T =

20 log (1 + ωT)

-20 log (1 + ωT)

-10 log (1 + ω

^{2}T

^{2})

-20 log (1 + ω

^{2}T

^{2})

⇒ During playback the take up reel is

in clockwise motion

in anticlockwise motion

either clockwise or anticlockwise motion

none of the above