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Q1. | The stud in a stud mounted SCR acts as |

A. | anode [Correct Answer] |

B. | cathode [Wrong Answer] |

C. | gate [Wrong Answer] |

D. | anode or cathode [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 :**

⇒ In a TWT the amplitude of resultant wave travelling down the helix remains constant

TRUE

FALSE

⇒ The time constant of the network shown in figur

2 RC

5/3 RC

RC/2

None of these

⇒

Match the following:

List I (Double Rectifier) | List II (Number of Diodes) | ||
---|---|---|---|

A. | Full wave Bridge rectifier | 1. | 1 |

B. | Half wave rectifier | 2. | 2 |

C. | Full wave rectifier using centre tapped transformer | 3. | 4 |

A-1, B-2, C-3

A-3, B-1, C-2

A-2, B-1, C-3

A-3, B-1, C-2

⇒ In the circuit shown in figure the current

*I*of sinusoidal sourc

25 A

0.166666666666667

20 A

Not determinable from given data

⇒ Power transistors are invariably provided with

soldered connections

heat sink

metallic casing

none of the above

⇒ Some features of advanced mobile phone service are

- To provide telephone communication to a large number of telephone users within the area of a metropolitan only
- To use minimum amount of frequency spectrum
- To permit hand held as well as vehicle operation of telephone

1 and 2 only

1, 2, 3

1 and 3 only

2 and 3 only

⇒ Program counter in a digital computer

counts the number of programs run in the machine

counts the number of times a subroutine

counts the number of time the loops are executed

points the memory address of the current or the next instruction

⇒ When microprocessor processes both positive and negative numbers, the representation used is

l's complement

2's complement

signed binary

any of the above

⇒ If the height of transmitting and receiving antenna in a LOS system are 49 meter and a 9 meter respectively then the distance up to which communication may be possible is about

40 km

110 km

400 km

1100 km

⇒ A CE amplifier has a high input signal. In the wave shape of emitter current

positive and negative half cycles will be symmetrical

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positive half cycle will be compressed and negative half cycle will be elongated

the half cycles may be either elongated or compressed

⇒ Which of the following instruments has non-linear scale?

- Moving coil instrument
- Moving iron instrument
- Electrostatic instrument
- Rectifier instrument

2 only

2 and 3 only

2, 3 and 1

1, 2, 3 and 4

⇒ From which instant is the turn off time of a thyristor defined

when anode voltage becomes zero

when anode current becomes zero

when both anode voltage and current become zero

none of the above

⇒ A '

*n*' bit sequence generator employing SR flip-flop has maximum length of the sequence as :

2

^{n}*n*

2

*- 1*

^{n}2

^{n}^{-1}

⇒ In most electric irons, the thermister used for controlling temperature is

vapour-filled bulb

high-expansion steel rod

bimetallic strip

thermopile

⇒ Nodal analysis is applicable to __________ .

planar network

planar and Non-planar both

circuit containing only voltage source

non planer

⇒ If R(t) is autocorrelation of a waveform

*v*(

*t*) and R(0) is autocorrelation for t = 0, then

R(0) > R(t)

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R(0) ≤ R(t)

⇒ A dc network has 3 independent nodes and 4 loops. In total analysis, the number of equations is

4

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1

⇒ Consider a baseband binary PAM receiver shown below. The additive channel noise

*n*(

*t*) is whit with power spectral density S

_{N}(

*f*) = N

_{0}/2 = 10

^{-20}W/Hz. The low-pass filter is ideal with unity gain and cutoff frequency 1 MHz. Let Y

_{k}represent the random variable

*y*(

*t*

0.5 x

0.5 x

0.5 x

_{k}0.5 x*e*^{-3.5}0.5 x

*e*^{-5}0.5 x

*e*^{-7}0.5 x

*e*^{-10}

⇒ Consider the frequency modulated signal 10 cos (2p x 10

12.5

10

7.5

5

⇒ The trignometric Fourier series of an even function of time does not have

dc term

cosine term

sine term

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⇒ In a mechanical accelerometer, the steady state displacement is a measure of

constant input acceleration

constant input velocity

either (a) or (b)

neither (a) nor (b)

⇒ Which of the following can be used as a tachogenerator in control systems?

Microsyn

DC servomotor

AC servomotor

Magnetic amplifier

⇒ In a turnstile antenna the crossed dipoles are excited with voltages

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90° out of phase with each other

120° out of phase with each other

180° out of phase with each other

⇒ The problem associated with tuned-radio frequency receiver is

instability

insufficient adjacent frequency rejection

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all of the above

⇒ The depletion layer consists of immobile ions.

TRUE

FALSE

⇒ A duplexer is used to

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isolate the antenna from the local oscillator

prevent interference between two antennas connected to receiver

use an antenna for reception or transmission without interference

⇒ The self inductances of two coils are 27 H and 3 H. If the winding or coils is such that 50% of flux of one links the other, the mutual inductance is

30 H

24 H

9 H

4.5 H

⇒ Tesla is unit of

Φ

B

H

MMF

⇒ A Maxwell's bridge has the unknown inductance in one arm and resistance in the other three arms.

TRUE

FALSE

⇒ Which of the following is a valid variable in FORTRAN 77?

0.125

ALPHA -3

ALPHA 3

BALPHAC

⇒ Consider the frequency modulated signal 10 cos (2p x 10

^{5}*t*+ 5 sin (2p x 1500*t*) + 7.5 sin (2p x 1000*t*) with carrier frequency of 10^{5}Hz. The modulation index is12.5

10

7.5

5

⇒ The trignometric Fourier series of an even function of time does not have

dc term

cosine term

sine term

odd harmonic terms

⇒ In a mechanical accelerometer, the steady state displacement is a measure of

constant input acceleration

constant input velocity

either (a) or (b)

neither (a) nor (b)

⇒ Which of the following can be used as a tachogenerator in control systems?

Microsyn

DC servomotor

AC servomotor

Magnetic amplifier

⇒ In a turnstile antenna the crossed dipoles are excited with voltages

in phase with each other

90° out of phase with each other

120° out of phase with each other

180° out of phase with each other

⇒ The problem associated with tuned-radio frequency receiver is

instability

insufficient adjacent frequency rejection

bandwidth variation

all of the above

⇒ The depletion layer consists of immobile ions.

TRUE

FALSE

⇒ A duplexer is used to

couple two antennas to a transmitter

isolate the antenna from the local oscillator

prevent interference between two antennas connected to receiver

use an antenna for reception or transmission without interference

⇒ The self inductances of two coils are 27 H and 3 H. If the winding or coils is such that 50% of flux of one links the other, the mutual inductance is

30 H

24 H

9 H

4.5 H

⇒ Tesla is unit of

Φ

B

H

MMF

⇒ A Maxwell's bridge has the unknown inductance in one arm and resistance in the other three arms.

TRUE

FALSE

⇒ Which of the following is a valid variable in FORTRAN 77?

0.125

ALPHA -3

ALPHA 3

BALPHAC