Q1. | Consider the following stateme |

A. | 1, 2 and 3 [Correct Answer] |

B. | 1 and 2 only [Wrong Answer] |

C. | 2, 3 and 4 [Wrong Answer] |

D. | 2, 3 and 4 [Wrong Answer] |

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**Also Read Similar Questions Below :**

⇒ The 2's complement representation of the decimal number -4 is

100

1100

1011

1010

⇒ In using Nyquist stability criterion it is not necessary to determine closed loop poles.

TRUE

FALSE

⇒ As compared to a

*p*-

*n*junction diode

a schottky diode has lower cut in voltage and lower reverse saturation current

a schottky diode has higher cut in voltage and higher reverse saturation current

a Schottky diode has lower cut in voltage and higher reverse saturation current

a schottky diode has higher cut in voltage and lower reverse saturation current

⇒ An amplifier of passband 450 kHz to 460 kHz will be named as

video amplifier

audio frequency amplifier

tuned voltage amplifier

wideband amplifier

⇒

**Assertion (A):** The number ∈ such that the probability that an error is between -∈ and + ∈ is 1 is called probable error of single obserevation.

**Reason (R):** The standard deviation is the arms value of the deviation from the arithmetic mean.

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 true, R is false

A is false, R is true

⇒ In CE circuit the parameter

*f*

_{12}is very small.

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°

⇒

Match the following:

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

A. | Mu Metal | 1. | very high magnetic permeability |

B. | Samrium/cobalt | 2. | very high magnetic remanence |

C. | Sapphire | 3. | very high thermal conductivity |

D. | Ferrites | 4. | very stable magnetic permeability |

A-1, B-2, C-3, D-4

A-3, B-4, C-1, D-2

A-2, B-3, C-4, D-1

A-4, B-1, C-2, D-3

⇒ Which of the following impedance inversion is obtained?

Short-circuited stub

A quarter wave line

Balun transformer

A half wave line

⇒ In figure, the power associated with 3 A sourc

36 W

24 W

16 W

8 W

⇒ What is the normal range of analog input voltage?

0 to 1 V

0 to 5 V

5 to 15 V

15V to 30V

⇒ Which of the following best represents the output impedance of an actual op-amp?

10 ohm

100 ohm

10 k ohm

100 k ohm

⇒ A thyristor has maximum allowable junction temperature of 110° C and the ambient temperature is 40°C, If the maximum internal power dissipation is 50 W, the thermal resistance is

2° C/W

1.4° C/W

0.7°C/W

2.2° C/W

⇒

Match the following:

List I (Electron spin) | List II (Phenomenon) | ||
---|---|---|---|

A. | ↑↑↑↑ | 1. | Antiferromagnetism |

B. | ↑↓↑↓ | 2. | Ferrimagnetism |

C. | ↑↓↑↓ | 3. | Ferromagnetism |

A-1, B-2, C-3

A-3, B-2, C-1

A-2, B-3, C-1

A-3, B-1, C-2

⇒ Nyquist stability criterion is based on a theorem from the theory of complex variables.

TRUE

FALSE

⇒

**Assertion (A):** When frequencies of signals fed to X and Y plates of CRO are multiples of each other, Lissajous pattern is displayed on screen.

**Reason (R):** In a CRO, the vertical deflection is proportional to voltage applied to Y plates.

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 R is false

A is false R is true

⇒ A linear displacement digital transducer generally uses

straight binary code

BCD

gray code

hexadecimal code

⇒ 2N 2430 could be a

semi-conductor diode

dual gate MOSFET

BJT

UJT

⇒ High intermediate frequency in a superheterodyne receiver

higher than

lower than

equal to

not comparable to

⇒ Transverse magnetic (TM) waves have

magnetic field component H in the direction of propagation

electric field component E in the direction of propagation

magnetic field component H in the direction of propagation and no component of electric field E in this direction

electric field component E in the direction of propagation and no component of magnetic field H in this direction

⇒ In the stabilized reactance modulators AFC system

the discriminator must have a fast time constant to prevent demodulation

the higher discriminator frequency the better the oscillator frequency stability

the discriminator frequency must not be too low, or the system will fail

phase modulation is converted into FM by the equalizer circuit

⇒ The modulation index of an AM wave is changed from 0 to 1. The transmitted power is

unchanged

halved

increased by 50%

quadrupled

⇒ Maximum rectification efficiency for a half wave rectifier is

1

0.88

0.5

0.406

⇒ Choose the correct statement

The reflection coefficient (r) of a transmission line is greater than 1

r varies from 0 to ∞

r is less than or equal to 1

r varies from - ∞ to + ∞

⇒ In the below figure the rms voltage across each half of secondary is 200 V. The peak inverse voltage across each of thyristor

200 V

2(200) V

2(400) V

800 V

⇒

**Assertion (A):** Superposition theorem can be used to find the output of a full wave rectifier excited by sinusoidal signal sources of different frequencies connected in series.

**Reason (R):** Superposition theorem is valid for all linear systems.

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

Both A and R are true and R is not the correct explanation of A

A is true but R is false

A is false but R is true

⇒ The minor M

*of an*

_{ij}*n*x

*n*matrix is the determinant of (

*n*- 1) x (

*n*- 1) matrix formed by deleting the

*i*th row and

*j*the column of

*n*x

*n*matrix.

TRUE

FALSE

⇒ Parallel adder is

sequential circuit

combinational circuit

either sequential or combinational circuit

none of the above

⇒ An 8 bit binary number is to be entered into an 8 bit serial shift register. The number of clock pulses required is

1

2

4

8

⇒ "Micro-program" is

the name of the source program in microcomputer

the set of instructions indicating the primitive operations in 1 system

the general name of 'MACRO's' in assembly language programming

the name of programs of very small size