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Q1. | Dynamic memory cells are constructed using |

A. | FETs [Wrong Answer] |

B. | MOSFETs [Correct Answer] |

C. | Transistors [Wrong Answer] |

D. | Flip flops [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss 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 :**

⇒ For the output F to be 1 in the logic circuit shown, the input combination shoul

A = 1, B = 1, C = 0

A = 1, B = 0, C = 0

A = 0, B = 1, C = 0

A = 0, B = 0, C = 1

⇒ Integral control action

removes offset

may lead to oscillatory response

both (a) and (b)

neither (a) nor (b)

⇒ The theoretical maximum efficiency of a half wave diode rectifier is

0.406

0.5

0.812

slightly less than 100%

⇒ Distilled water at 25°C is characterized by σ = 1.7 x 10

^{-4}mho/m and ε = 78 ε

_{0}at a frequency of 3 GHz. Its loss tangent is (ε = 10

^{-9}/36p F/m)

1.3 x 10

^{-5}

1.3 x 10

^{-3}

1.7 x 10

^{-4}/78

1.7 x l0

^{-4}/78ε

_{0}

⇒ The voltage gain of an amplifier without and with feedback are 100 and 20. The negative feedback is

0.04

0.05

0.2

0.8

⇒ Find V

_{x}V

_{y}V

_{zVx = -6 Vy = 3 Vz = -3Vx = -6 Vy = -3 Vz = 1Vx = 6 Vy = 3 Vz = 3Vx = 6 Vy = 1 Vz = 3}

⇒ Piezoelectric quartz crystal resonators find application where

signal amplification is required

rectification of the signal is required

signal frequency control is required

modulation of signal is required

⇒ The factor η for a UJT is about

0.1

0.2

0.6

0.9

⇒ Which op-amp circuit uses a resistance in series with input and capacitor in feedback path?

Differentiating amplifier

Integrating amplifier

Logarithmic amplifier

Exponential amplifier

⇒ The turn ratio of a transformer is 20:1, if a load of 10Ω is connected across the secondary, what will be the effective resistance seen looking into the Primary?

2 kΩ

4 kΩ

8 kΩ

32 kΩ

⇒ Which of the following cannot be the Fourier series expansion of a periodic signal?

*x*(

*t*) = 2 cos

*t*+ 3 cos 3

*t*

*x*(

*t*) = 2 cos pt + 7 cos

*t*

*x*(

*t*) = cos

*t*+ 0.5

*x*(

*t*) = 2 cos 1.5p

*t*+ sin 3.5 p

*t*

⇒ In figure I

_{D}= 4 mA. Then V

_{GS4.4 V-4.4 V0.44 V-0.44 V}

⇒ A sinusoidal current having peak value of 7.07 A is superimposed on dc of 5A. If a hot-wire ammeter is used to measure the combined current in the circuit, it will indicate __________ ampere.

7.07

10

12.07

2.07

⇒ Consider the following statements

- An assembler is a program having assembly language program as input and machine language program as output.
- A macro assembler is an assembler with additional macro facilities.
- A cross assembler for a μP X is an assembler which executes on source microcomputer with a different CPU than X bit generates code for X.
- Assemblers generally do not provide macro facilities.

All are correct

only 1, 2, 3 are correct

only 1, 2, 4 are correct

only 1, 3, 4 are correct

⇒ Skip distance depends on time of day and angle of incidence.

TRUE

FALSE

⇒

**Assertion (A):** ECL gate has very high speed of operation.

**Reason (R):** Transistors in ECL do not go into saturation region.

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

⇒ The Gain margin for the system with open loop transfer functi

∞

0

1

-∞

⇒ GaAs has an energy gap 1.43 eV the optical cut off wavelength of GaAs would lie in the

visible region of the spectrum

infrared region of the spectrum

ultraviolet region of the spectrum

for ultraviolet region of the spectrum

⇒ The transition of electron from energy level W

_{1}to W

_{2}is associated with emission or absorption of electro magnetic radiation of frequency

*f*such that

*hf*= |W

_{1}- W

_{2}|

|W

_{1}- W

_{2}|

*f*=

*h*

*hf*= 0.5|W

_{1}- W

_{2}|

(

*hf*)

^{2}= |W

_{1}- W

_{2}|

⇒ A radar receiver has a noise figure of 10 dB at 300 K having a bandwidth of 2.5 MHz. The minimum power it can receive is

3.45 x 10

^{-15}W

1.38 x 10

^{-15}W

7.5 x 10

^{-15}W

93.15 x 10

^{-15}W

⇒ Consider the following program in C

-1

1.15

-1.15

⇒ Inverse Fourier transform of '1' is

U(

*t*)

δ(

*t*)

0'

infinite

⇒ Which of the following lines behaves as infinite line?

a line terminated in inductance

a line terminated in capacitance

a short line

a line terminated in

*z*

_{0}

⇒ Curl of gradient A is

∇ x (∇A) = 1

∇ x (∇A) = ∞

∇ x (∇A) = 0

∇ x (∇A) = - ∞

⇒ Principle of superposition is applicable to

linear systems only

nonlinear systems only

both linear and non linear system

linear systems and some nonlinear systems

⇒ Zener breakdown occurs

due to rapture of covalent band

mostly in germanium junctions

in lightly doped junctions

due to thermally generated minority carriers

⇒ Which of the following expressions is true for apparent power in an A.C. circuit?

VI cos Φ

V

_{av}x I

_{av}

V

_{r.m.s}x I

_{r.m.s}

V

_{peak}x I

_{peak}

⇒ In figure, V

_{G2.22 V22.2 V0.22 V0.022 V}

⇒ In a bipolar transistor, the base collector junction has

forward bias

reverse bias

zero bias

zero or forward bias

⇒ The gain of an antenna with a circular aperture of diameter 3 metres at a frequency of 5 GHz, will be

2.4674

24.674

246.74

24674