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Q1. | An impulse function consist of |

A. | pure dc [Wrong Answer] |

B. | pure a.c [Wrong Answer] |

C. | entire frequency range with constant phase [Correct Answer] |

D. | infinite bandwidth with linear phase vaariations [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 :**

⇒ If an inductance L is connected in one arm of bridge and resistance R

_{1}, R

_{2}, R

_{3}in other three arms

the bridge cannot be balanced

the bridge can be balanced

the bridge is balanced for some specified value of frequency

the bridge is balanced for some specific values of R

_{1}, R

_{2}, R

_{3}

⇒ For the given figure C(

*s*)/R(

*s<*

K

0.5 K

2 K

0.25 K

K

0.5 K

2 K

0.25 K

⇒ Which one is correct option?

5, 4, 3, 2

3, 4, 1, 2

2, 4, 3, 1

1, 2, 3, 4, 5

⇒ The number of doped regions in a SCR is

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⇒ The current distribution along a travelling wave antenna can be written in the form

⇒ Panel instruments are generally mounted vertically.

TRUE

FALSE

⇒ The damping coefficient for the given circuit is _______

42737

42739

2

1

⇒ Insulation resistance of a cable is directly proportional to its length.

TRUE

FALSE

⇒ The word 'LORAN' means

long range navigation

long range TV transmission

long range cable transmission

either (b) or (c)

⇒ Consider the following

1 only

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1, 2 only

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⇒ The minimum value of

54.4

45.4

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⇒ Which of the following are the non-linear application of op-amp?

1, 2 and 3

2, 3 and 4

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⇒ Which of the following is a valid integer constant?

127

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⇒ The application of gate signal decreases the break over voltage of on SCR.

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⇒ In AM receiver the oscillator frequency is

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⇒ In a 3 phase system, the zero sequence component of line to line voltages is zero

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⇒ The current

41 A, 410 W respectively

35 A, 350 W respectively

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⇒ Figure sho

JFET

none of the above

⇒ A 24 mm long conductor has a resistance of 128 Ω. The change in resistance is 13.3 Ω and change in length is 1.6 mm under tension. The gauge factor is

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⇒ Ground wave can be used for communication upto

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⇒ A Si sample is doped with a fixed number of group N impurities. The electron density

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⇒ DeMorgan's second theorem is

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⇒ Minimum number of J-K flip-flop needed to construct a

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⇒ In van der walls crystals, there exists a high degree of stability of the outer electron shell.

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⇒ An energy signal has G(

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⇒ In the circuit of figure the current through L at

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0.416666666666667

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⇒ The number of channels available in MF band (300 kHz - 3 MHz) for AM modulating signal of 20 kHz is

70

67

100

150

⇒ A dc separately excited motor has a constant field current. The armature is fed from a single phase supply through a semi-converter. When a = 0, speed is 600 rpm. If a = 90°, the speed is likely to be

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⇒ In which one of the following types of analog to digital convertors the conversion time is practically independent of the amplitude of the analog signal?

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⇒ Which one is correct option?

- A pure capacitor never dissipates energy, but only stores.
- Capacitor can store finite amount of energy even cunent is zero.
- The current through a capacitor is zero if voltage across it d.c.
- Voltage across a capacitor cannot change instantaneously since it would require an infinite current.
*q*_{c}(0^{-}) =*q*_{c}(0^{+})

5, 4, 3, 2

3, 4, 1, 2

2, 4, 3, 1

1, 2, 3, 4, 5

⇒ The number of doped regions in a SCR is

2

3

4

5

⇒ The current distribution along a travelling wave antenna can be written in the form

*f*(*z*) =*f*_{0}e^{-jβz}*f*(*z*) =*f*_{0}sin β_{z}*f*(*z*) =*f*_{0}*f*(*z*) =*f*_{0}cos (ω*t*- β_{z})⇒ Panel instruments are generally mounted vertically.

TRUE

FALSE

⇒ The damping coefficient for the given circuit is _______

42737

42739

2

1

⇒ Insulation resistance of a cable is directly proportional to its length.

TRUE

FALSE

⇒ The word 'LORAN' means

long range navigation

long range TV transmission

long range cable transmission

either (b) or (c)

⇒ Consider the following

- Generation of SSB signals
- Design of minimum phase type filters
- Representation of band pass signals

1 only

1, 2 and 3

1, 2 only

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⇒ The minimum value of

*h*_{fe}of a transistor used in RC phase shift oscillator is54.4

45.4

44.5

29

⇒ Which of the following are the non-linear application of op-amp?

- Current-to-voltage converter
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- Peak detector
- Limiter

1, 2 and 3

2, 3 and 4

1, 3 and 4

1, 2 and 4

⇒ Which of the following is a valid integer constant?

127

127

127

125 + 3

⇒ The application of gate signal decreases the break over voltage of on SCR.

TRUE

FALSE

⇒ In AM receiver the oscillator frequency is

always equal to signal frequency

always equal to 455 kHz

always higher than signal frequency

always lower than signal frequency

⇒ In a 3 phase system, the zero sequence component of line to line voltages is zero

if line to line voltages are balanced

if line to line voltages are unbalanced

if line to line voltages are balanced or unbalanced

if degree of unbalanced in line to line voltages is small

⇒ The current

*i*(*t*) through a 10 Ω resistor in series with an inductance is given by*i*(*t*) = 3 + 4 sin (100*t*+ 45°) + 4 sin (300*t*+ 60°) Amperes. The RMS value of the current and the power dissipated in the circuit are41 A, 410 W respectively

35 A, 350 W respectively

5 A, 250 W respectively

11 A, 1210 W respectively

⇒ Figure sho

JFET

*n*-channel MOSFET*p*-channel MOSFETnone of the above

⇒ A 24 mm long conductor has a resistance of 128 Ω. The change in resistance is 13.3 Ω and change in length is 1.6 mm under tension. The gauge factor is

1.2

1.6

2.1

2.6

⇒ Ground wave can be used for communication upto

5 kHz

12 kHz

16 kHz

25 kHz

⇒ A Si sample is doped with a fixed number of group N impurities. The electron density

*n*is measured from 4 K to 1200*k*for the sample. Which one of the following is correct?n remains constant over the temperature range

n increases monotonicaliy with increasing temp

n increases first remains constant over a range and again increases with increasing temperature

n increases show a peak and then decrease with temperature

⇒ DeMorgan's second theorem is

A . A = 0

A = A

A + B = A . B

AB = A + B

⇒ Minimum number of J-K flip-flop needed to construct a

*BCD*counter is2

3

4

5

⇒ Which of the following instruments is used almost exclusively to measure radio frequency currents?

Moving coil

Rectifier

Moving iron

Thermocouple

⇒ In van der walls crystals, there exists a high degree of stability of the outer electron shell.

TRUE

FALSE

⇒ An energy signal has G(

*f*) = 10. Its energy density spectrum is10

100

50

20

⇒ In the circuit of figure the current through L at

*t*= &infin0

0.416666666666667

6.67 A

5.1 A

⇒ The number of channels available in MF band (300 kHz - 3 MHz) for AM modulating signal of 20 kHz is

70

67

100

150

⇒ A dc separately excited motor has a constant field current. The armature is fed from a single phase supply through a semi-converter. When a = 0, speed is 600 rpm. If a = 90°, the speed is likely to be

about 300 rpm

about 150 rpm

about 75 rpm

about zero

⇒ In which one of the following types of analog to digital convertors the conversion time is practically independent of the amplitude of the analog signal?

The dual slope integrating type

Successive approximation type

Counter ramp type

Tracking type