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Q1. | An increase of reverse voltage decreases the junction capacitance. |

A. | TRUE [Correct Answer] |

B. | FALSE [Wrong Answer] |

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

⇒ When performing numerical calculations in floating point arithmetic

- Error may occur due to finite representation of numbers.
- Error may occur due to rounding.
- Error may occur due to finite representation of inherently infinite process.

All

1 and 2 only

1 and 3 only

2 and 3 only

⇒ Trinitron is a monochrome picture tube.

TRUE

FALSE

⇒ An electron in a homogeneous magnetic field and having velocity perpendicular to the direction of field moves

perpendicular to the field

along the field

along a straight line inclined at 45° to field

in a circular path

⇒ Which of the following is used as a passive component in electronic circuits?

Tunnel diode

Capacitor

Transistor

Vacuum tube

⇒ The critical frequency of 'F' layer is greater than 30 MHz.

TRUE

FALSE

⇒ In a series RC circuit Z = (R

^{2}+ ω

^{2}C

^{2})

^{0.5}.

TRUE

FALSE

⇒ If an electron move through a potential difference of 500 V, the energy possesses by it will be

500 ergs

500 joules

500 eV

500 mV

⇒ What will be equipotential surfaces for a pair of equal and opposite line charges?

Spheres

Concentric cylinders

Non-concentric cylinders

None of the above

⇒

**Assertion (A):** In direct addressing the address of operand is specified in the instruction.

**Reason (R):** Direct addressing is also called absolute addressing.

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 R is wrong

A is wrong R is correct

⇒ The types of carriers in a semiconductor are

1

2

3

4

⇒ Sound waves are electromagnetic waves.

TRUE

FALSE

⇒ Polar plot of a lag-lead compensator is a circle.

TRUE

FALSE

⇒ In a RL circuit, the angle, θ by which the current lags the voltage is

0 > θ > - 90°

90°

0°

0 < θ < 90°

⇒ Minimum no. of 2 I/P NAND gate required to implement the Boolean function Z = ABC, assuming that A, B and C are available is

2

3

5

6

⇒ Which of the following is correct for a driving point functions?

The real parts of all poles must be negative

The real parts of all poles and zeros must be negative

The real parts of all poles and zeros must be negative or zero

The real parts of all zeros must be negative

⇒ What are the minimum number of 2 to 1 multiplexers required to generate a 2 input AND gate a 2 input Ex-OR gate?

1 and 2

1 and 3

1 and 1

2 and 2

⇒ RMS value of

*i*(

*t*) = 10[1 + sin (-

*t*)] is

10

10/2

l50

102

⇒ A 200 turn coil has a self inductance of 10 mH. If the number of turns is doubled, all other quantities remaining the same, the self inductance will be

2.5 mH

5 mH

20 mH

40 mH

⇒ High intermediate frequency in a superheterodyne receiver

higher than

lower than

equal to

not comparable to

⇒ A load commutated chopper circuit has

one thyristor

two thyristors

four thyristors

six thyristors

⇒ Consider the following statements about transport-lag

- It is of non-minimum phase behaviour
- It normally exists in thermal, hydraulic and pneumatic systems
- It has an excessive phase lag with no attenuation at high frequency

1 only

1 and 2

All

2 and 3

⇒ Consider two random processes

*x(t)*and

*y(t)*have zero mean, and they are individually stationary. The random process is

*z(t)*=

*x(t)*+

*y(t)*. Now when stationary processes are uncorrelated then power spectral density of

*z(t)*is given by

S

*+ S*

_{x}(f)*+ 2S*

_{y}(f)

_{xy}(f)S

*+ S*

_{x}(f)*+ 2S*

_{y}(f)*+ 2S*

_{xy}(f)

_{yx}(f)S

*+ S*

_{x}(f)

_{y}(f)S

*+ S*

_{x}(f)*- 2S*

_{y}(f)*- 2S*

_{xy}(f)

_{yx}(f)⇒ A sawtooth current wave is passed through a resistance

the waveshapes of voltages across resistance and power will also the sawtooth

the waveshape of voltage across resistance will be sawtooth

the waveshape of power will be sawtooth

neither the voltage waveshape nor power wave-shape will be sawtooth

⇒ Degaussing in a picture tube means

Adding magnetism in mask and mounting frame

Removing residual magnetism in mask, shield etc...

Increasing resistance of coils to decrease time constant

Decreasing resistance of coils to increase time constant.

⇒ 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)

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | Horn antenna | 1. | High directivity |

B. | Parabolic antenna | 2. | Very high directivity |

C. | Lens antenna | 3. | Moderate directivity |

A-1, B-2, C-3

A-3, B-2, C-1

A-3, B-1, C-2

A-1, B-3, C-2

⇒ The capacitance of a capacitor is not affected by

area of plates

thickness of plates

∈

_{r}

distance between plates

⇒ A 0.5 μF capacitor is connected across a 10 V battery. After a long time, the circuit current and voltage across capacitor will be

0.5 A and 0 V

0 A and 10 V

20 A and 5 V

0.05 A and 5 V

⇒ For the circuit shown in the following figure I

_{0}-I

_{3}are inputs to the 4:1 multiplexer R(MSB) and S are control

PQ + PQ S + Q R S

P Q + PQ R + P Q S

P Q R + P QR + PQRS + Q R S

PQ R + PQR S + P Q R S + Q R S

⇒ In the expression 3 * * 2 ** 4 ** 2 in FORTRAN 77 which exponentiation is performed first

4 * * 2

2 * * 4

3 * * 2

all exponentiation are performed together