Q1. | In an n channel MOSFET, the substrate is connected |

A. | to negative terminal of battery [Correct Answer] |

B. | to positive terminal of battery [Wrong Answer] |

C. | to either positive or negative terminal of battery [Wrong Answer] |

D. | none of the above [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 :**

⇒

**Assertion (A):** In Figure, the intercept of the line on *y*-axis is equal to *N* (a_{e} + a_{i}), where *N* is number of atoms/m^{3}, a_{e} is electronic polarizability and a_{i} is ionic polarizability.

**Reason (R):** a_{e} and a_{i} are independent of temperatu

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

⇒ Which of the following statement is false?

A stationary process is always a ergodic process

A ergodic process is always a stationary random process

It is possible to have a stationary random

None of the above

⇒ Work function of oxide coated cathode is much lower than that of tungsten cathode.

TRUE

FALSE

⇒ In single tone FM discriminator (S_{0}/N_{0}) is

proportional to deviation

proportional to cube of deviation

proportional to square of deviation

none of the above

⇒ The number of gates in an SCR is

1

3

4

6

⇒ Four MSI TTL 4-bit ripple counters are cascaded to form a 16-bit binary counter. Its propagation delay is about __________ nanoseconds.

70

140

210

280

⇒ In figure the total inductance of the circui

L_{1} + L_{2}

L_{1} + L_{2} - M

L_{1} + L_{2} - 2M

L_{1} + L_{2} + M

⇒ The initial state of a Mod-16 counter is 0110. After 37 clock pulses the state of counter will be

1011

110

10

1

⇒ The open loop gain of an amplifier is 200. If negative feedback with β = 0.2 is used, the closed loop gain will be

200

40

4.878

1.212

⇒ The characteristic impedance of coaxial cable is about

1000 ohm

500 ohm

250 ohm

75 ohm

⇒ In indicating instruments the controlling torque is provided by a spring.

TRUE

FALSE

⇒ Consider the following symbols for arithmetic operators for integers

1, 2 and 4 only

All

1, 2, 3 only

1 and 4 only

⇒ An AND gate has two inputs A and B and one inhibit input 3, Output is 1 if

A = 1, B = 1, S = 1

A = 1, B = 1, S = 0

A = 1, B = 0, S = 1

A = 1, B = 0, S = 0

⇒ If V

_{a1}, V

_{a2}, V

_{a0}are the symmetrical components of V

_{a}, then

V

_{a}= V

_{a1}+ V

_{a2}+ V

_{a0}

V

_{a}=

*a*

^{2}V

_{a1}+

*a*V

_{a2}+ V

_{a0}

V

_{a}=

*a*V

_{a1}+

*a*

^{2}V

_{a2}+ V

_{a0}

V

_{a}=

*a*V

_{a0}+

*a*

^{2}V

_{a1}+ V

_{a2}

⇒ If X = 2.5 and Y = 2.5, which of the following expressions would give the result as 5/7?

X + 2.5 / Y + 3.0

(X + 2.5) / Y + 4.5

(X + 2.5) / (Y + 4.5)

(X + 2.5) / Y + 3.5

⇒ E

_{G}for silicon is 1.12 eV and that for germanium is 0.72 eV. Therefore it can be concluded that

more number of electron-hole pairs will be generated in silicon than in germanium at room temperature

less number of electron hole pairs will be generated in silicon than in germanium at room temperature

equal number of electron-hole pairs will be generated in both at lower temperatures

equal number of electron-hole pairs will be generated in both at higher temperatures

⇒ The derating factor for a BJT transistor is about

0.5 mW/°C

2.5 mW/°C

10 mW/°C

25 mW/°C

⇒ The damping coefficient for the given circuit is _______

42737

42739

2

1

⇒ The rated current of a thyristor is 40 A. The holding current will be about :

20 A

0.0416666666666667

100 mA

10 mA

⇒ A resistance and an inductance are connected in parallel and fed from 50 Hz ac mains. Each branch takes a current of 5 A. The current supplied by source is

0.416666666666667

7.07 A

0.208333333333333

zero

⇒ The noise figure of klystron amplifier is about

25 dB

3 dB

zero

1 dB

⇒ In a colour TV receiver, PAL Dematrix consists of

chroma detector to separate the three primary colours

delay line and PAL matrix to give U and V signals

delay line and PAL matrix to give RGB colours

none of the above

⇒ An RLC series circuit is underdamped. To make it overdamped, the value of R

has to be increased

has to be decreased

has to be increased to infinity

has to be reduced to zero

⇒ Occasionally a discrete amplifier user RF chokes instead of collector resistors. Such amplifiers are inherently

low pass amplifiers

high pass amplifiers

band pass amplifiers

none of the above

⇒ The storage capacity of audio CD is 540 Mb per side.

TRUE

FALSE

⇒ The intrinsic resistivity of silicon at 300 K is about

1 Ω-cm

400 Ω-cm

10000 Ω-cm

230000 Ω-cm

⇒ Inputs A and B of the given figure are applied to a NAND gate. The output is

from 0 to 6

from 0 to 2

from 0 to 1 and 2 to 3

from 1 to 2 and 3 to 4

⇒ In figure, Z

_{1}= 200∠60° Ω, Z

_{2}= 400∠ - 90° Ω, Z

_{3}= 300∠0°. Then Z

_{4}for bridge to be balanced

150∠30° Ω

400∠ - 90° Ω

300∠90° Ω

600∠ - 150° Ω

⇒ The material used for the magnet of moving coil cone type loudspeaker is

steel alloy

soft iron

hard steel

Alnico

⇒ In a single phase full wave ac regulator the rms value of load current is 20 A load is purely resistive. Then

average thyristor current will be less than 20 A but rms thyristor current will be more than 20 A

both the average and rms thyristor currents will be less than 20 A

both the average and rms thyristor currents will be more than 20 A

rms thyristor current will be 20 A and average thyristor current will be 10 A