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Q1. | The static equalisation circuit for thyristors connected in series is |

A. | one resistor in series with each thyristor [Wrong Answer] |

B. | one resistor in parallel with each thyristor [Correct Answer] |

C. | one resistor and one capacitor in parallel with each thyristor [Wrong Answer] |

D. | none of the above [Wrong Answer] |

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

⇒ A thyristor has internal power dissipation of 40W and is operated at an ambient temperature of 20°C. If thermal resistance is 1.6° C/W, the junction temperature is

114°C

164°C

94° C

84° C

⇒ Consider the following statements about root locus

- The intersection of root locus branches with the imaginary axis can be determined by the use of Routh criterion
- Segments of real axis having an odd number of real axis open loop poles plus zeros to their right are not parts of root locus
- The number of root locus branches terminating on infinity is always zero

1, 2 and 3

1 and 2 only

1 only

2 and 3 only

⇒ A device that converts from decimal to binary numbered is called

decoder

encoder

CPU

converter

⇒ Isotropic radiator is one that radiates energy

uniformly in all direction

inside a hollow sphere

in a well defined isotropic direction

none of the above

⇒ The point P in the following figure is stock at 1. The output

*f*wil

ABC

A

AB C

A

⇒ Consider a 565 PLL with R

_{T}= 10 kΩ and C

_{T}= 0.01 μF. What is the output frequency of the VCO?

10 kHz

5 kHz

2.5 kHz

1.25 kHz

⇒ Consider the following symbols for arithmetic operators for integers

- +
- div
- mod
- /

1, 2 and 4 only

All

1, 2, 3 only

1 and 4 only

⇒ A sample of N type semiconductor has an electron density of 6.25 x 10

^{18}/cm

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^{13}/cm

^{3}at this temperature, the hole density is

10

^{6}/ cm

^{3}

10

^{8}/ cm

^{3}

10

^{10}/ cm

^{3}

10

^{12}/ cm

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⇒ A line is excited by a 100 V dc source. If reflection coefficients at both ends are 1 each then

there will be no oscillations on line

there will be only 1 or 2 oscillations on line

there will be a finite number of oscillations on line

the oscillations will continue indefinitely

⇒ A monostable multivibrator has

no stable state

one stable state

two stable state

none of the above

⇒ Consider the following amplifier with negative feed

-9 x 10

^{-3}

9 x 10

^{-3}

-11 x 10

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11 x 10

^{-3}

⇒ The term critical frequency denotes

the lowest frequency that is reflected by the ionosphere

the highest frequency that is reflected by the ionosphere at vertical distance

the lowest frequency by which communication is possible between two given points

none of the above

⇒ For a P-N junction diode, the current in reverse bias may be

few amperes

between 0.5 A and 1 A

few milliamperes

few micro or nanoamperes

⇒ For the control system in the given figure, the value of K for critical dampin

1

5.125

6.831

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⇒ The number of valence electrons in silicon atom is

4

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⇒ The disadvantage of transformer coupling in amplifier is

cost of transformer at audio frequencies

size of transformer at audio frequencies

size of transformer at radio frequencies

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⇒ The circuit shown below is functionally equivalen

NOR gate

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⇒ In a CE amplifier the dc load line is the same as ac load line when

ac collector resistance and dc collector resistance are equal

ac collector resistance and dc emitter resistance are equal

ac collector resistance is very high

ac collector resistance is one half of dc collector resistance

⇒

**Assertion (A):** Electronic polarizability increases as atoms becomes larger.

**Reason (R):** For rare gas, ∈_{0}(∈_{r} - 1) E = Na_{e}, where N is number of atoms/m^{3} and a_{e} is electronic polarizability of material.

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 statement ! (

*b*< 5) in C means

*b*= 5

*b*> 5

*b*> = 5

none of the above

⇒ The number of layers in a Shockley diode are

2

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4

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⇒ For Bode plot of (1 +

*j*ωT) has

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^{-1}(ωT)

slope of - 20 dB/decade and phase angle + tan

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slope of 20 dB/decade and phase angle - tan

^{-1}(ωT)

slope of - 40 dB/decade and phase angle - tan

^{-1}(ωT)

⇒ Automobile ignition systems use the principle of

resistance

self inductance

mutual inductance

capacitance

⇒ The Nyquist plot of a stable, transfer function

*G*(

*s*) is shown in the figure. We are interested in the stability of the closed loop system in the feedback configuration sh

6 dB and 180°

3 dB and 180°

6 dB and 90°

3 dB and 90°

⇒

**Assertion (A):** In a push pull circuit each transistor stays in the active region for one half cycle

**Reason (R):** A push pull amplifier has low distortion

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

⇒ A buffer amplifier should have

high input impedance and low output impedance

high input impedance and high output impedance

low input impedance and high output impedance

low input impedance and low output impedance

⇒ The first column of a Routh arra

2

3

4

5

⇒ In radar display system PPI stands for

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Plan Position Indicator

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⇒ A network has two sources of different frequencies. The only method of analysis which can be used to find current and voltages of different branches is the use of

Kirchoff's laws

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Tellegen's theorem

⇒ The boolean expression for shaded area in the given figur

AB + AC

ABC + ABC

ABC + ABC

None of these