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Q1. | In a parallel resonant circuit, the circuit current at resonance is maximum. |

A. | TRUE [Wrong Answer] |

B. | FALSE [Correct Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ Fortran 77 has six arithmetic operators.

TRUE

FALSE

⇒ An open coil has

zero resistance and inductance

zero resistance and high inductance

infinite resistance and zero inductance

infinite resistance and normal inductance

⇒ The resistance of a metallic wire would

increase as

*f*increase

decrease as

*f*increase

remains the same at all frequencies

increase with

*f*up to a certain frequency and then decrease

⇒ An open wire transmission line having a characteristic impedance of 600 ohms is terminated by a resistive load of 900 Ω. The standing wave ratio will be

1.5

2.5

3.5

4.5

⇒ In radio receiver, the maximum contribution to noise is from

mixer stage

power supply

power amplifier

equally from above three

⇒ Which of the following statement is incorrect?

UJT is a 3-terminal diode having two unequally doped regions

A UJT can be triggered by any one of its three terminals

The bi-directional switching characteristics of a diac are symmetrical

As compared to JFETs, MOSFETs generate less noise in high gain amplifiers

⇒ The width of a radio beam from a 1 m diameter parabolic antenna at 1 GHz is about

100°

50°

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⇒ Which of the following needs DC forward voltage to emit light?

LED

LCD

Both LED as well as LCD

None of the above

⇒ The amplifier used in miller voltage sweep should have a gain of

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+∞

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⇒ An antenna has a resistance of 50 Ω and an equivalent noise resistance of 30 Ω The noise figure in decibels is

1.6 dB

2 dB

3.6 dB

6 dB

⇒ A series RC circuit has fixed R and C and variable

*f*. The current locus will lie in the first quadrant.

TRUE

FALSE

⇒ A system has 12 poles or 2 zeros. Its high frequency asymptote in its magnitude plot has slope of

-200 dB/decade

-240 dB/decade

-280 dB/decade

-320 dB/decade

⇒ A differential amplifier consists of two CB amplifiers.

TRUE

FALSE

⇒ The impulse response

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*t*)

*u*(

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*t*) denotes the unit step function. The output of this system to the sinusoidal input

*x*(

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*t*, is

0

2

^{-0.25}cos (2

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2

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*t*- 0.125p)

2

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⇒ The effect of adding poles and zeros can be determined quickly by

Nichols chart

Nyquist plot

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⇒ Which of the following is not correct in respect of electrostatic instrument?

It is essentially a voltmeter

It is suitable for only high voltages

It has a uniform scale

It can be used for both ac and dc

⇒ If

*a*and

*b*are the width and height of rectangular wave-guide the cut off wavelength λ

_{c}for TE

_{20}mode is equal to

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*a*+

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⇒ If

*p*is the probability of success and

*q*is the probability of failure, then the probability that there are

*r*successes in

*n*trails is

^{n}

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*p*

^{r}*q*

^{n}

^{-}

^{r}

^{n}*c*

_{r}

*p*

^{n -}

^{r}*q*

^{r}^{n}

*c*

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^{r}*q*

^{n}

^{+}

^{r}

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_{r}*p*

^{n}*q*

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⇒ CMRR of an op-amp is about 0.1.

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⇒ The general purpose register code for accumulator in 8085 is

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121

144

172

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nickel tape

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⇒ The function to Calculate the maximum value in the specified field of a database is

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⇒ For an

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270°

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⇒ Consider the following rules about integer constant in C

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- An integer constant must not have a decimal point.
- An integer constant may be positive or negative.
- The default sign is positive.
- A maximum of one comma or blank is allowed.

All

1, 2, 3, 4 only

1, 2, 3, 5

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⇒ An active network has

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⇒ A multiple emitter transistor has many emitters and collectors.

TRUE

FALSE