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Q1. | The first contribution to logic was made by |

A. | George Boole [Wrong Answer] |

B. | Copernicus [Wrong Answer] |

C. | Aristotle [Correct Answer] |

D. | Shannon [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss 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 :**

⇒ Which of the following is known as insulated gate FET?

JFET

MOSFET

Both JFET and MOSFET

None of the above

⇒ Which of the following is the poorest conductor of electricity?

Aluminium

Nichrome

Copper

All of the above

⇒ Which power amplifier can deliver maximum load power?

Class A

Class AB

Class B

Class C

⇒ For the waveform shown below, the slew rate and full power bandwidth with respect to op-amp will be respecti

0.02 V/μsec, 1.59 KHz

0.04 V/μsec, 1.59 KHz

0.02 V/μsec, 3.58 KHz

0.02 V/μsec, 1.59 KHz

⇒ Consider the following statements in connection with CMOS inverter in figure where both the MOSFET are of enhancement type and both have a threshold voltage of

Only statement 1 is true

Only statement 2 is true

Both the statement are true

Both the statements are false

⇒ In what condition does BJT act like an open switch

cut off

saturation

active

both (b) and (c)

⇒

**Assertion (A):** Relative permittivity is determined by the atomic structure of the material.

**Reason (R):** Absolute permittivity is determined by the atomic structure of the material.

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

⇒ In a series regulated power supply circuit the voltage gain of pass transistor satisfies the condition

A

_{v}→ ∞

1 << A

_{v}→ ∞

A

_{v}≈ 1

A

_{v}<< 1

⇒ In a superheterodyne receiver, having no RF amplifier, the IF is 455 kHz. The image frequency at 1000 kHz is

1455 kHz

545 kHz

1910 kHz

90 kHz

⇒ The input resistance of FET in the low frequency small signal operation is

infinitely high

around 1 kΩ

around 50 Ω

very small

⇒ McMurrary full bridge inverter uses

auxiliary commutation

complementary commutation

natural commutation

any of the above

⇒ Two messages

*m*

_{1}, and

*m*

_{2}have a probability of 0.5 each. The entropy is

0.25

0.5

0.75

1

⇒ The approximate value of input impedance of a common emitter amplifier with emitter resistance R

_{e}is given by

*h*

_{ie}+ A

_{I}R

_{e}

*h*

_{ie}+ (

*i*+

*h*

_{fe}) R

_{e}

*h*

_{ie}

(1 +

*h*

_{fe}) R

_{e}

⇒ For an RC admittance function

all poles and zeros are simple

all poles and zeros are simple and lie on negative real axis

all poles and zeros lie on imaginary axis

all poles and zeros lie on positive real axis

⇒ Gain margin and phase margin can be determined from Bode plots as well as Nyquist plot.

TRUE

FALSE

⇒ Find the number of loop equation and number of possible trees for the given gr

7, 2097152

7, 262144

7.5764801

6, 823543

⇒ If CS = A

_{15}A

_{14}A

_{13}is used as chip select logic of a 4 K RAM in 8085 system, its memory range is

3000 H - 3 FFF H

7000 H - 7 FFFH

5000 H - 5 FFF H and 6000 H - 6 FFF H

6000 H - 6 FFF H and 7000 H - 7 FFF H

⇒ When a unit step voltage drives a lag network the output

remains constant at unit step value

increases exponentially from zero to final value

decreases exponentially from 1 to 0

either (b) of (c) depending on values of R and C

⇒ An 8156 has A

_{15}connected to its CE input. A

_{14}to A

_{8}are unconnected, and AD

_{7}to AC

_{0}are connected.Ignoring shadows, the port addresses

80 H

85 H

82 H, 83 H

80 H to 85 H

⇒ The current in a circuit is measured using a 150 : 1 CT If the ammeter reads 0.6 A, the circuit current is

250 A

90 A

156 A

144 A

⇒ For a given magnetic material operating in linear mode B = 0.06 T. Assume permeability = 51, then magnetization is:

44836 A/m

46834 A/m

946 A/m

936 A/m

⇒ The frequency of the driving network connected between pins 1 and 2 of a 8085 chip must be

equal to the desired clock frequency

twice the desired clock frequency

four times the desired clock frequency

eight times the desired clock frequency

⇒ Read the following statements about 8085

`RAL`

instruction rotates`ACC`

contents left by 1 bit- When
`RAL`

instruction is executed once the binary number gets doubled `STC`

means set`CY`

to 1

1 and 2 only

1, 2 and 3 only

1, 2 and 4 only

1 and 4 only

⇒ In cellphone communication base antennas are connected to other base antennas in

line of sight communication

ionospheric propagation

ground wave propagation

medium wave propagation

⇒ In the given figure the input is

*x*(

*t*) = A sin ω

*t*. The steady state output

*y*(

*tA sin (ω*

|G(

|G(

A G(

*t*+ φ) where φ = tan^{-1}|G(*j*ω)||G(

*j*ω)| A sin [ω*t*+ ∠G(*j*ω)]|G(

*j*ω)| A sin [2ω*t*+ ∠G(*j*ω)]A G(

*j*ω) sin [ω*t*+ ∠G(*j*ω)]

⇒ The most commonly used logic family is

ECL

TTL

CMOS

PMOS

⇒ Which of the following is equivalent to AND-OR realization?

NAND-NOR

NOR-NOR

NOR-NAND

NAND-NAND

⇒ 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

⇒ A network has two sources of different frequencies. The only method of analysis which can be used to find current and voltages of different branches is the use of

Kirchoff's laws

Superposition theorem

Thevenin's theorem

Tellegen's theorem

⇒ In an ideal junction transistor the impurity concentration in emitter (E ), base (B) and collector (C) is such that

E > B > C

B > C > E

C > E > B

C = E = B

⇒ The most commonly used logic family is

ECL

TTL

CMOS

PMOS

⇒ Which of the following is equivalent to AND-OR realization?

NAND-NOR

NOR-NOR

NOR-NAND

NAND-NAND

⇒ 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

⇒ A network has two sources of different frequencies. The only method of analysis which can be used to find current and voltages of different branches is the use of

Kirchoff's laws

Superposition theorem

Thevenin's theorem

Tellegen's theorem

⇒ In an ideal junction transistor the impurity concentration in emitter (E ), base (B) and collector (C) is such that

E > B > C

B > C > E

C > E > B

C = E = B