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Q1. | The poles of an RC function |

A. | are simple and lie on jω axis [Correct Answer] |

B. | are simple and lie on negative real axis [Wrong Answer] |

C. | may be complex conjugate [Wrong Answer] |

D. | may be anywhere in s plane [Wrong Answer] |

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

⇒ For type 2 system, the magnitude and phase angle of the term (

*j*ω)

^{2}in the denominator, at ω = 0, are respectively

0 and - 90°

0 and + 90°

infinity and - 180°

infinity and + 180°

⇒ The circuits with active pull up are preferred because of their stability for

wired - AND operation

wired - OR operation

bus operated system

reasonable dissipation and speed of operation

⇒ The wavelength of an electromagnetic wave after reflection at angle on a surface

remains same as the wavelength perpendicular to the surface

remains same in the free space

increases in actual direction of propagation

decreases in actual direction of propagation

⇒ A step up chopper can give an output voltage

higher than input voltage

lower than input voltage

both higher and lower input voltage

all of the above

⇒ As the temperature of semiconductor is increased

the average number of free charge carriers decreases

the average number of free charge carriers increases

the average number of free charge carriers remains the same

the average number of free charge carriers may increase or decrease

⇒ If A = 131 ± 4 and B = 106 ± 4, the percentage range of doubt in A - B is

0.04

0.08

0.16

0.32

⇒ NAND gates can be used to produce edge triggering.

TRUE

FALSE

⇒ Out of SR and JK flip flops, which is susceptible to race condition?

SR

JK

Both SR and JK

None of the above

⇒ During testing of an energy meter, the energy recorded by meter was 0.05 kWh and correct energy was found to be 0.09 kWh. The error and correction respectively are

-0.01 kWh and 0.01 kWh

0.01 kWh and -0.01 kWh

-0.01 kWh and ± 0.01 kWh

± 0.01 kWh and 0.01 kWh

⇒ Which of the following flip-flops is used as latch?

JK flip-flop

D flip-flop

RS flip-flop

T flip-flop

⇒ A diode peak reading VTVM and thermocouple meter are connected across output of an amplitude modulated circuit. In the absence of modulation both meters read 10 V. When sinusoidal AM is applied, VTVM reads 15V The reading of thermocouple meter will be

10 V

12.5 V

14.1 V

15 V

⇒ In orthogonal BFSK, the energy of information bearing term is

the same as total transmitted energy

one-half of total transmitted energy

one-fourth of total transmitted energy

none of the above

⇒ For a short dipole having an effective length less than half the wavelength the radiation resistance is

proportional to length

proportional to square root of length

proportional to square of length

none of the above

⇒ In a CE transistor amplifier, when collector-emitter voltage increases

the instantaneous operating point moves up the load line

the instantaneous operating point moves down the line

load current increases

none of the above

⇒ For static electric and magnetic fields in an homogenous source-free medium, which of the following represents the correct form of Maxwell's equations?

Δ.E = 0

Δ.E = 0

Δ x E = 0

Δ x E = 0

⇒ The unit for luminous energy is

lumens/sec

lumens/m

^{2}

lumen-sec

lumen/m

⇒ At resonance the network function magnitude will be

*k*/

*a*

*k*/

*b*

*c*

*k*/

*a*+

*b*

⇒ In a dual converter operated in circulating current mode, the circulating current flows

when load current is zero

when load current is non-zero

even when load current is zero

none of the above

⇒ A 12 bit ADC is employed to convert an analog voltage of zero to 10 volts. The resolution of the ADC is

2.44 mV

24.4 mV

83.3 mV

1.2 V

⇒ The number of PM radio channels which can be accommodated in a spectrum of 300 MHz is about

10

100

500

1500

⇒ A high level language is less efficient than machine language.

TRUE

FALSE

⇒ The baud rate is

not equal to signalling rate

always equal to bit transfer rate

equal to twice the bandwidth of an ideal channel

equal to half the bandwidth of ideal channel

⇒ The service area of a TV transmitter is a little beyond radio horizon.

TRUE

FALSE

⇒ In a D latch

D drives R and D drives S

D drives S and D drives R

D drives both R and S

D drives both R and S

⇒ In a CE amplifier

both ac and dc load lines have the same slope

the ac load line has more slope than dc load line

the ac load line has less slope than dc load line

the two load lines may have slope more than the other

⇒ For a voltage transfer function H(

*s*), realizable by RLC network, the following statements are made

- H(
*s*) cannot have a pole at*s*= 0 - H(
*s*) cannot have a pole at*s*= ±*j*4 - H(
*s*) cannot have a pole at*s*= ∞ - H(
*s*) cannot have a pole at*s*= + 2

3 and 4 are correct

2 and 4 are correct

1 and 2 are correct

1 and 3 are correct

⇒ In an RC series circuit excited by dc voltage E, the current at

*t*= 0 is

E/R

E/C

zero

infinity

⇒ If

*t*and

_{on}*t*are the turn on and turn off times of a thyristor, then

_{off}*t*and

_{on}*t*are almost equal

_{off}*t*>>

_{on}*t*

_{off}*t*>>

_{off}*t*

_{on}*t*is about twice

_{on}*t*

_{off}⇒ For the amplifier in figure, β = 800. The mid-band voltage gain V

_{0}/V

_{i0< 1≈ 1800}

⇒ The use of coaxial microwave line should be restricted to frequencies

below cut off frequency of TE

_{11}mode

above cut off frequency of TE

_{11}mode

at frequencies much lower than cut off frequency of TE

_{11}mode

at frequencies much higher than cut off frequency of TE

_{11}mode