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Q1. | The maximum concentration of the element which can be dissolved in solid silicon at a given temperature is termed as |

A. | Solid solubility [Wrong Answer] |

B. | Dissolution coefficient [Correct Answer] |

C. | Solidification index [Wrong Answer] |

D. | Concentration index [Wrong Answer] |

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

⇒ The log magnitude for the system in the given figure is (where T =

20 log (1 + ωT)

-20 log (1 + ωT)

-10 log (1 + ω

^{2}T

^{2})

-20 log (1 + ω

^{2}T

^{2})

⇒ δ(

*t*) is a

energy signal

power signal

neither energy nor power

none

⇒ A heater is rated at 230 V, 5 A AC. Then

both the current and voltage are peak values

both the current and voltage are rms values

the current is peak value and voltage is rms value

the current is rms value and voltage is peak value

⇒ A silicon sample A is doped with 10

^{18}Atoms/cm

^{3}of Boron. Another sample B of identical dimensions is doped with 10

^{18}atoms/cm

^{3}of phosphorus. The ratio of electron to hole mobility is 3. The ratio of conductivity of the sample A to B is

3

42738

42769

42796

⇒ Current in a 2H inductance in 10

*e*

^{-t}A. Admittance of the inductor is

-0.5 mho

0.5 mho

5 mho

10 mho

⇒ In a CE amplifier drives a low load resistance directly the result will be

overloading of amplifier

underloading of amplifier

overloading or underloading of amplifier depending on circuit

none of the above

⇒ A loop antenna may be of

square on triangular shape

hexagonal shape

circular shape

any of the above

⇒ In following figure, what will be R

_{1}and R

_{2}for maximum symmetrical swing if V

_{CSat}≈ 0. Given that R

_{E}= 200 Ω, R

_{C}= 400 Ω, V

_{CC}= 20 V, β

6 k

3 k, 6 k

9.9 k, 2.4 k

2.4 k, 9.9 k

⇒ A pole zero plot of a filter is shown in figure. I

low pass filter

high pass filter

band pass filter

all pass filter

⇒ Norton's equivalent circuit

is same as Thevenin's circuit

has no relation with Thevenin's circuit

is dual of Thevenin's circuit

is reciprocal of Thevenin's circuit

⇒ Consider the following statements

- An iron cored choke is a nonlinear device.
- A carbon resistor kept in a sunlight is a time - invariant and passive device.
- A dry cell is a time - varying and active device.
- An air capacitor is a time - invariant and passive device

1, 2, 3 and 4 are correct

1, 2 and 3 are correct

1, 2 and 4 are correct

2 and 4 are correct

⇒ The theoretical power of white noise is

zero

finite

depend upon frequency of signal

infninite

⇒

Match the following:

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

A. | Ring modulator | 1. | Clock recovery |

B. | VCO | 2. | Demodulation of FM |

C. | Foster Seeley discriminator | 3. | Frequency conversion |

D. | Mixer | 4. | Summing of two points |

5. | Generation of FM | ||

6. | Generation of DSB-SC |

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

A-6, B-5, C-2, D-3

A-6, B-1, C-3, D-2

A-5, B-6, C-1, D-3

⇒ A 1 ms pulse can be stretched to 1 sec pulse by using

an astable multivibrator

a monostable multivibrator

a bistable multivibrator

a Schmitt trigger circuit

⇒ Which of the following contributes to harmonics distortion in amplifiers?

Positive feedback

Presence of noise

Defective active device

Non-linearity in active device

⇒ What can be the maximum dimension of an array in C language program?

3

4

5

It is compiler dependent

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

^{8}/cm

^{2}at 300 K. If the intrinsic concentration of carriers in this sample is 2.5 x 10

^{13}/cm

^{3}at this temperature, the hole density works out to be

10

^{6}/cm

^{3}

10

^{8}/cm

^{3}

10

^{10}/cm

^{3}

10

^{l2}/cm

^{3}

⇒ A memoryless source emits

*n*symbols each with a probability

*p*. The entropy of the source as a function of

*n*

increases as log

*n*

decreases as log (1/

*n*)

increases as

*n*

increases as

*n*log

*n*

⇒

**Assertion (A):** Magnetism can be explained by the theory of magnetic domains.

**Reason (R):** The existence of magnetic domains is evident from the Bitter powder patterns.

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

⇒ A typical signal strength received from a geosynchronous communication satellite is of the order of a few

milliwatts

kilowatts

picowatts

watts

⇒ The gate width of a monostable multivibrator is given by

T = 1.1 RC

T = 0.693 RC

0.963 RC

T = 0.369 RC

⇒ For dc the current through coupling capacitor in CE amplifier circuit is

very high

high

low

zero

⇒ In figure the cut in voltage of diode is 0.7 V and its bulk resistance is 20 Ω. The peak value of circuit current of during positive and negative half cycles

10 mA and zero

9.12 mA and zero

9.3 mA and zero

zero and 9.12 mA

⇒ Using the same flip flops

a synchronous flip flop can operate at higher frequency than ripple counter

a ripple counter can operate at higher frequency than synchronous counter

both ripple and synchronous counter can operate at the same frequency

can not determine

⇒ Given two numbers A and B in sign magnitude representation in an eight bit format A = 00011110 and B = 10011100 then A ⊕ B gives

10000010

11111

10011101

11100001

⇒ The S (sign) flag is set when the contents of accumulator become negative during an operation.

TRUE

FALSE

⇒ A 555 timer can be used as

an astable multivibrator

monostable multivibrator

frequency Divider only

any of the above

⇒

Match the following:

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

A. | Anderson Bridge | 1. | Low resistance |

B. | Kelvin Bridge | 2. | Medium resistance |

C. | Schering Bridge | 3. | Inductance |

D. | Wheatstone Bridge | 4. | Capacitance |

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

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

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

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

⇒ Which of the following is a circularly polarized antenna?

Rhombic

Circular loop

Helical

Yagi

⇒ The decoder for PAL system is

similar to NTSC decoder

similar to NTSC decoder supplemented by 64 ms delay line

similar to NTSC decoder supplemented by 64 ms delay line and an electronic commutator

either (b) or (c)