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Q1. | Schering bridge operates at a high voltage of about 10 kV. |

A. | TRUE [Correct Answer] |

B. | FALSE [Wrong Answer] |

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

⇒ Divergence of curl A is

∇ . (∇ x A) = 1

∇ . (∇ x A) = 0

∇ . (∇ x A) = ∇

∇ . (∇ x A) = - ∞

⇒ In

*n*channel JFET

I

_{D}and V

_{DS}are positive but V

_{GS}is negative

I

_{D}and V

_{GS}are positive but V

_{DS}is negative

V

_{DS}and V

_{GS}are positive but I

_{D}is negative

I

_{D}, V

_{DS}and V

_{GS}are all positive

⇒ Consider the following stateme

1 only

1 and 2

2 and 3

2 and 4

⇒ Voltage series feedback (Also called series-shunt feedback) results in

increase in both I/P and O/P impedances

decrease in both I/P and O/P impedances

increase in I/P impedance and decrease in O/P impedance

decrease in I/P impedance and increase in O/P impedance

⇒ The phase difference (

*j*ω -

*p*

_{1}) means

phasor drawn from

*p*

_{1}to

*j*ω

phasor drawn from origin to

*p*

_{1}

phasor directed from origin to

*j*ω point

phasor directed from

*j*ω to

*p*

_{1}

⇒ One coulomb charge is equal to the charge on

6.24 x 10

^{18}electrons

6.24 x 10

^{24}electrons

6.24 x 10

^{18}atoms

none of the above

⇒ Which of these has semi-conductor metal junction?

PIN diode

Photo diode

Tunnel diode

Schottky diode

⇒ As the magnitude of reverse bias is increased, the capacitance of varactor diode

increases

decreases

first increase, then decreases

first decreases then increases

⇒ In the integer expression

`- A * B div C + D`

which operation is done first in Pascal-

*

div

+

⇒

**Assertion (A):** In AM carrier component remains constant in amplitude and frequency.

**Reason (R):** In AM the two side bands are images of each other.

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not correct explanation of A

A is correct but R is wrong

A is wrong but R is correct

⇒ In an

*n*channel JFET

I

_{D}, I

_{S}and I

_{G}are considered positive when flowing into the transistor

I

_{D}and I

_{S}are considered positive when flowing into transistor and I

_{G}is considered positive when flowing out of it

I

_{D}, I

_{S}, I

_{G}are considered positive when flowing out of transistor

I

_{S}and I

_{G}are considered positive when flowing into transistor and I

_{D}is considered positive when flowing out of it

⇒ The circuit shown in figure conv

BCD to binary code

binary to excess-3 code

excess-3 to Gray code

gray to binary code

⇒ If F

_{n}represents Fourier series coefficient of

*f*(

*t*), then Fourier series coefficient of f(

*t*+

*t*) =

F

_{n}

*e*

^{-jω}

_{0}

^{t}

F

_{n}

*e*

^{jω}

_{0}

^{t}

F

_{n}

*e*

^{jnω}

_{0}

^{t}

F

_{n}

*e*

^{-jnω}

_{0}

^{t}

⇒ Which of the following uses a capacitor in the feedback path?

Active low pass filter

Active high pass filter

Both (a) or (b)

Neither (a) nor (b)

⇒ The difference between phase and frequency modulation

is purely of academic interest

lies in the different definitions of the modulation index

lies in the poor audio response of phase modulation

is too great to make the two systems compatible

⇒ If X = 1 in the logic equation [X + Z { Y + (Z + X Y)}] { X + Z (X + Y)} = 1, then

Y = Z

Y = Z

Z = 1

Z = 0

⇒ The effective modulation index is:

0.91287

0.8306

1

none of these

⇒ For a quadratic factor in transfer function the phase angle is not a function of damping factor.

TRUE

FALSE

⇒ 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}

⇒ The amount of dielectric heating is inversely proportional to frequency.

TRUE

FALSE

⇒ If (225)

_{Y}= (165)

_{8}find value of Y

7

8

9

11

⇒ A 16 bit type ADC uses 1 MHz clock its maximum conversion time is __________ .

16 μs

15 ms

6.5 ms

66 ms

⇒ A voltage v(

*t*) which is a gaussian ergodic random process witha mean of zero and a varance of 4 volt

^{2}is measured by a meter which first square and then reads its dc component. The reading will be

0

4

16

2

⇒ The correct form of expression B

^{3}-2 A C in FORTRAN 77 is

B * * 3 - 2 * A * C

B * 3 - 2 * A AC

B * * 3 - 2 ** A * C

B *** 3 - 2 * A * C

⇒ A good dielectric should have

low losses

good heat conductivity

high intrinsic strength

all of the above

⇒ In which of the following frequency bands are the standard AM radio broadcast stations?

MF

HF

VHF

UHF

⇒ If H(

*s*) is positive real, 1/H(

*s*)

is positive real

is not positive real

may or may not be positive real

must possess some other properties also if it is to be positive real

⇒ For a transistor the normal collector voltage is 12 V. If actually it is found to be + 28 V, the trouble could be

R

_{L}is open

R

_{E}is open

C

_{E}is shorted

C

_{E}is open

⇒ The class of insulation of impregnated paper is

A

B

C

F

⇒ Maximum effective aperture (A

_{e})max of short dipole antenna is

1.119 λ

^{2}

0.119 λ

^{2}

1.19 λ

^{2}

1.919 λ

^{2}