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Q1. | In a 5 x 7 dot matrix, format, to store 64 alphanumeric characters we require |

A. | 1120 bits [Wrong Answer] |

B. | 2240 bits [Correct Answer] |

C. | 33 bits [Wrong Answer] |

D. | 64 bits [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 :**

⇒ A transmission line having 50 Ω impedance is terminated in a load of (40 +

*j*30) Ω. The VSWR is

*j*0.033

0.8.+

*j*0.6

1

2

⇒ In a system using QASK and 4 bits to form a symbol, the required bandwidth is

same as BPSK

half of that in BPSK

one-fourth of that in BPSK

none of the above

⇒

Match the following:

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

A. | Bode | 1. | Asymptotic plots |

B. | Evans | 2. | Polar plots |

C. | Nyquist | 3. | Root locus technique |

4. | M and N circles |

A-1, B-4, C-2

A-2, B-3, C-4

A-3, B-1, C-4

A-1, B-3, C-2

⇒ M circles are symmetrical with respect to

real and imaginary axis

M = 1 straight line and real axis

M = 1 straight line and imaginary axis

M = 1 straight line

⇒ Consider the following network func

zero at origin

zero at infinity

pole at origin

pole at infinity

⇒ The characteristic equation of flip-flop gives the next state Q

_{N + 1}in terms of present state Q

_{N}and the inputs. Which one of the following is the characteristic equation of J - K flip-flop?

Q

_{N+1}= JQ

_{N}+ KQ

_{N}

Q

_{N+1}= J + KQ

_{N}

Q

_{N+1}= KQ

_{N}+ JQ

_{N}

Q

_{N+1}= K + JQ

_{N}

⇒ A series RC circuit has fixed X

_{C}, and variable R. The current locus is in the first quadrant.

TRUE

FALSE

⇒ A diode detector load consists of 0.01 μF capacitor in parallel with a 5 k ohms resistor. The maximum depth of modulation without diagonal clipping at modulating frequency of 1000 Hz and 10 kHz is

0.76, 0.24

0.95, 0.3

0.24, 076

0.3, 0.95

⇒ A bistable multivibrator

has no stable state

has one stable state

has two stable state

none of the above

⇒ The resistance of a photoconductor

increases with increase in light intensity

decreases with increase in light intensity

may increase or decrease with increase in light intensity

remains constant

⇒ The

*Z*inverse of the given

*Z*transform i

unit step

unit impulse

unit ramp

unit parabola

⇒ The amount of dielectric heating is inversely proportional to frequency.

TRUE

FALSE

⇒ The characteristic equation for the next state (Q

_{n+1}) of a J-K flip-flop is

Q

_{n+1}= JQ

_{n}+ KQ

_{n}

Q

_{n+1}= JQ

_{n}+ KQ

_{n}

Q

_{n+1}= JQ

_{n}+ KQ

_{n}

Q

_{n+1}= JQ

_{n}+ KQ

_{n}

⇒ When a 1 V increase in gate voltage changes the drain current 10 mA in an FET, its

*g*

_{m}equals

10 μμ

100 μμ

1000 μμ

10000 μμ

⇒ An 8-bit microprocessor has 16 bit address bus A

_{0}- A

_{15}. The processor addresses a 1-K byte memory chip as shown. The address range for the chi

(F00F)

_{H}TO (F40E)

_{H}

(F000)

_{H}TO (F3FF)

_{H}

(F100)

_{H}TO (F4FF)

_{H}

(F700)

_{H}TO (FAFF)

_{H}

⇒ In carbon resistor colour code, if the third band is of silver, it indicates

that three zeros are to be added to indicate the resistance value

multiplier is 0.01

multiplier is 0.1

tolerance is ± 5%

⇒ Which of the following is used as a passive component in electronic circuits?

Tunnel diode

Capacitor

Transistor

Vacuum tube

⇒ When large amount of power is required, a push pull amplifier is designed for operation as

class A

class B

class C

class AB

⇒ An image uses 512 x 512 picture elements. Each of the picture elements can take any of the 8 distinguishable intensity levels. The maximum entropy in the above image will be

2097152 bits

786432 bits

648 bits

144 bits

⇒

**Assertion (A):** Silicon is less sensitive to changes in temperature than germanium.

**Reason (R):** It is more difficult to produce minority carriers in silicon than in germanium.

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

Both A and R are true but R is not a correct explanation of A

A is true but R is false

A is false but R is true

⇒ Which of the following represents a stable system?

- Impulse response decreases exponentially.
- Area within the impulse response in finite.
- Eigen values of the system are positive and real.
- Roots of the characteristic equation of the system are real and positive.

1 and 4

1 and 3

2, 3 and 4

1, 2

⇒ If

*f*

_{1}and

*f*

_{2}and half-power frequency and

*f*

_{0}be resonant frequency, the selectivity of R-L-C series circuit is given by

(

*f*

_{2}-

*f*

_{1})/2

*f*

_{0}

(

*f*

_{2}-

*f*

_{1})/

*f*

_{0}

(

*f*

_{2}-

*f*

_{0})/(

*f*

_{1}-

*f*

_{0})

(

*f*

_{2}-

*f*

_{1})/(

*f*

_{1}-

*f*

_{0})

⇒ Which of the following oscillators is used for the generation of high frequencies?

R-C phase shift oscillator

Wien bridge oscillator

L-C oscillator

Blocking oscillator

⇒ An alternating current or voltage is that which

changes in magnitude only

changes in direction only

both (a) and (b)

has a random movement of electrons

⇒ In cellular telephone each cell is designed to handle

45 two way communications

90 two way communications

45 one way communications

180 two way communications

⇒ The correct sequence of events to improve system stability is

insert derivative action, use negative feedback, reduce gain

reduce gain, use negative feedback, insert derivative action

reduce gain, insert derivative feedback, use negative feed back

use negative feedback, reduce gain, insert derivative action

⇒ The difference between measured value and true value is called

gross error

relative error

probable error

absolute error

⇒ Harmonic distortion analyser

measures amplitude of each harmonic

measures rms value of fundamental frequency component

measures rms value of all harmonics except fundamental frequency

displays rms value of each harmonic on screen of CRO

⇒ A sinusoidal voltage of 2 kV peak value is amplitude modulated to give 20% modulation. The peak value of each side band term is

400 V

200 V

100 V

800 V

⇒ The circuit shown below is functionally equivalen

NOR gate

OR gate

EX-OR gate

NAND gate