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Q1. | The integral of a unit step function is |

A. | an impulse function [Wrong Answer] |

B. | a ramp function [Wrong Answer] |

C. | a ramp function of slope 1 [Correct Answer] |

D. | none of these [Wrong Answer] |

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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 :**

⇒

**Assertion (A):** For elemental dielectrics, P = Na_{e}E_{i} where *N* is number of atoms/m^{3}, P is polarization, a_{e} is electronic polarization and E_{i} is internal electric field.

**Reason (R):** In elemental dielectrics there are no permanent dipoles or ions.

Both A and R are true and R is correct explanation of A

Both A and R are true but R is not correct explanation of A

A is true but R is false

A is false but R is true

⇒ The current gain of a bipolar transistor drops at high frequencies because of

transistor capacitance

high current effects in the base

parasitic inductive elements

the early effect

⇒ In Weston frequency meter, the magnetic axes of the two fixed coils are

parallel

perpendicular

inclined at 60°

inclined at 15°

⇒ Two coils having self inductances of 10 mH and 40 mH are mutually coupled. The maximum possible mutual inductance is

40 mH

20 mH

10 mH

5 mH

⇒ Neper is

larger than a decibel

smaller than decibel

equal to 1 decibel

none of the above

⇒ An RC driving point impedance function has zeros at

*s*= - 2 and

*s*= - 5. The admissible poles are

*s*= 0 and

*s*= -6

*s*= -1 and

*s*= -3

*s*= 0 and

*s*= -1

*s*= -3 and

*s*= -4

⇒

**Assertion (A):** Inverse Laplace transform can be found from P(*s*) by inversion integral.

**Reason (R):** The function f(*t*) is assumed to be zero for *t* < 0.

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not correct explanation of A

A is correct but R is wrong

R is correct but A is wrong

⇒ In figure, the switch is closed at

*t*= 0. After some time

*i*= 6A and rate of change of current was 4A/s. The value of inducto

1 H

1.5 H

indeterminate

0.5 H

⇒ The fourier transform of the half cosine pulse as shown below is _______

0.5 {sin [0.5(

*f*- 1)] + sin [0.5 (

*f*+ 1)]}

0.25 [sin c[0.25 (

*f*- 2)1 + sin c[0.25(

*f*+ 2)]]

0.5 {sin c [0.5 (

*f*- 1)] + sin c [0.5 (

*f*+ 1)]}

sin c(

*f*- 0.5) + sin c (

*f*+ 0.5)

⇒ In a Karnaugh map for an expression having 'don't care terms' the don't cares can be treated as

0

1

1 or 0

none of the above

⇒ In an ordinary thyristor

turn on and turn off times are equal

turn on time is more than turn off time

turn off time is more than turn on time

turn on time may be equal, less than or more than turn off time

⇒ In the following figure C = 0.02 μF, and V

_{th}is known to be of frequency ω = 10

^{7}rad/sec and

*r*

_{d}= 2.5 Ω and Z

_{Th}= R

_{Th}= 10 Ω Then phase angle between

*i*

_{d}and V

_{d26.5°25°30°0°}

⇒ In envelope detection of an AM waveform

One side band and full-ampiitude carrier are needed

Both side bands and full-amplitude carrier are needed

Only two side bands are needed

Upper side band and part of carrier are needed

⇒ For insulators the energy gap is of the order of

0.1 eV

0.7 eV

1.1 eV to 1.2 eV

5 to 15 eV

⇒ Which amplifier has the higher power gain?

Common emitter

Common collector

Common base

Both CC and CE

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

TRUE

FALSE

⇒

- P(
*s*) =*s*^{4}+*s*^{3}+ 2*s*^{2}+ 4*s*+ 3 - Q(
*s*) =*s*^{4}+ 2*s*^{3}+*s*

*s*) and Q(

*s*) polynomials?

Both P(

*s*) and Q(

*s*) are Hurwitz

Both P(

*s*) and Q(

*s*) are non-Hurwitz

P(

*s*) is Hurwitz but Q(

*s*) is non-Hurwitz

P(

*s*) is non-Hurwitz but Q(

*s*) is Hurwitz

⇒ The current in a

*p*-

*n*junction diode with V volts applied in

*p*region relative to

*n*region (where I

_{0}is reverse saturation current,

*m*is ideality factor,

*k*is Boltzmann's constant, T is absolute temp and

*q*is charge on electron) is

I

_{0}(

*e*

^{-qV/mkT}- 1)

I

_{0}

*e*

^{-qV/mkT}

I

_{0}(

*e*

^{qV/mkT})

I

_{0}(

*e*

^{qV/mkT}- 1)

⇒ Which of the following is not a valid variable name in C?

*p o, t*

*p o t*

*po*_

*t*

*p*_

*ot*

⇒ The primary constants of a transmission line are

R and L

R, L and C

R and C

R, L, G and C

⇒ A TV. transmitting aerial is fixed on top of a 150 metre tower located on a mountain 1200 m height. The range of transmitter is

51 km

152 km

152 m

51 m

⇒ A series resonant circuit is fed by a voltage having rms value V. At resonance, the voltage across inductance V

_{L}and voltage across capacitance V

_{C}are related as

V

_{L}> V

_{C}

V

_{L}< V

_{C}

V

_{L}= V

_{C}

V

_{L}= 0.5 V

_{C}

⇒ The main feature of a parametric amplifier is

low noise

very high gain

broad bandwidth

both (b) and (c)

⇒ In 2 out of 5 code, decimal number 8 is

11000

10100

11000

1010

⇒ Which one of the following gives maximum probability of error?

ASK

DPSK

FSK

PSK

⇒ A long periodic antenna is a

frequency independent antenna

frequency dependent antenna

directional antenna

none of the above

⇒ (FE35)

_{16}XOR (CB15)

_{16}is equal to

(3320)

_{16}

(FE35)

_{16}

(FF50)

_{16}

(3520)

_{l6}

⇒ A capacitor used for power factor correction in single- phase circuit decreases

the power factor

the line current

both the line current and the power factor

the line current and increases power factor

⇒ The impedance parameter

*z*

_{21}is

transfer impedance at port 1 with port 2 open circuited

transfer impedance at port 1 with port 2 short circuited

transfer impedance at port 2 with port 1 open circuited

transfer impedance at port 2 with port 1 short circuited

⇒ A transmission line is feeding 1 watt of power to a horn antenna having a gain of 10 dB. The antenna is matched to the transmission line. The total power radiated by the horn antenna into the free space is

10 watts

1 watt

0.1 watt

0.01 watt