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Q1. | The number of accumulators in 6800 are |

A. | 2 [Correct Answer] |

B. | 3 [Wrong Answer] |

C. | 1 [Wrong Answer] |

D. | 4 [Wrong Answer] |

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**Also Read Similar Questions Below :**

⇒ The output of the 74 series of TTL gates is taken from a BST in

totem pole and common collector configuration

either totem pole or open collector configuration

common base configuration

common collector configuration

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

TRUE

FALSE

⇒ 84

_{16}- 2

*A*

_{16}is equal to

5

*A*

_{16}

4

*A*

_{16}

7

*A*

_{16}

15

*A*

_{16}

⇒ In the circuit shown below current through the resistor is shown. Voltage across 4 Ω resistor

8 volt

≈ 5.87 V

≈ 6.87 V

None of these

⇒ If number of information bits is 11, the number of parity bits in Hamming code is

5

4

3

2

⇒ A full wave diode rectifier using centre tapped transformer has diodes with forward resistance of 50 ohms each. The load resistance of 50 ohms each. The load resistance is also 50 ohms. The voltage regulation is

0.2

0.5

1

2

⇒ A satellite that simply reflect back the signals from one region of the earth to the other region is known as

orbiting satellite

geostationary satellite

active satellite

passive satellite

⇒ Which of the following statement is incorrect?

Z

_{0}is an ac characteristic that is the same for any length of time

The characteristic impedance can be measured approximately with a sensitive ohm meter

A line terminated in its Z

_{0}is a flat or non-resonant line

A twin lead has higher Z

_{0}but lower losses than coaxial cable

⇒ The radiation resistance of a resonant long wire antenna of half wavelength (λ/2) is given

73 Ω

120 p

377 Ω

7.3 Ω

⇒

Match the following:

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

A. | PMMC | 1. | Square law type scale |

B. | Moving iron | 2. | Very good response |

C. | Thermo-couple | 3. | Linear scale |

D. | Electrostatic | 4. | Voltmeter |

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

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

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

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

⇒ In equally tampered musical scale, an octave is divided into

12 intervals

10 intervals

7 intervals

5 intervals

⇒ The standard intermediate frequency for FM ratio is

10.7 MHz

4.5 MHz

75 kHz

455 kHz

⇒ In a single phase full wave regulator feeding a resistive load, the average current over one full cycle

is always zero

cannot be zero

may be sometimes zero

is always positive

⇒ The dc load current in a bridge rectifier circuit is 10 mA. The dc load current through each diode is

40 mA

20 mA

10 mA

5 mA

⇒ In a PCM system, if the code word length is increased from 6 to 8 bits, the signal to quantization noise ratio improves by the factor.

42953

12

16

8

⇒ In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as

transmission efficiency

front to back ratio

loss coefficient

none of the above

⇒ A communication channel with AWGN operating at a signal to noise ratio SNR >> 1 and bandwidth B has capacity C

_{1}. If the SNR is doubled keeping B constant, the resulting capacity C

_{2}is given by

C

_{2}≈ 2C

_{1}

C

_{2}≈ C

_{1}+ B

C

_{2}≈ C

_{1}+ 2B

C

_{2}≈ C

_{1}+ 0.3B

⇒ In 8085, which instructions are useful for writing and using subroutines?

CALL

RET

CALL and RET

none of the above

⇒ A first order system will never be able to give a __________ response

- band stop
- band pass
- all pass

1, 2, 3 true

1 and 3 true, 2 false

1, 2 are true 3 is false

1, 2 are false, 3 is true

⇒ A half adder adds

2 bits

3 bits

4 bits

2 or 3 bits

⇒ A voltage of 9 V is applied in forward direction to a semiconductor diode in series with a load resistance of 1000 Ω. The voltage across the load resistance is zero. It indicates that

diode is short circuited

diode is open circuited

resistor is open circuited

diode is either o.c or s.c

⇒ A short grounded vertical antenna has a length L which is 0.05λ at frequency

*f*. If its radiation resistance at

*f*is R ohms, then its radiation resistance at a frequency 2

*f*will be

R/2Ω

RΩ

2RΩ

4RΩ

⇒ Multiple member of antennas are arranged in arrays in order to enhance what property?

Both directivity and bandwidth

Only directivity

Only bandwidth

Neither directivity nor bandwidth

⇒ A transistor amplifier is operating in class A mode. If a transformer is connected for impedance matching, the efficiency will

increase

decrease

not be affected

increase or decrease

⇒ Which of the following devices should be used for accurate measurement of a low dc voltage?

Small range moving coil voltmeter

Dc potentiometer

Small range thermocouple voltmeter

Hot wire instrument

⇒ For a permanent magnetic material

the residual induction and coercive field should be large

the residual induction and coercive field should be small

area of hysteresis loop should be small

initial relative permeability should be high

⇒ The contents of the program counter after the call operation point to the first instruction on

stack

subroutine

either of the above

none of the above

⇒ RAMs can be built with bipolar or CMOS transistor RAMs that are not possible with bipolar transistors are

SRAM

SRAM, DRAM

DRAM

PROM

⇒ The equation ∇ . J = 0 is called

Poisson's equation

Kirchoff's node equation

Continuity equation for static currents

Continuity equation for sampling currents

⇒ The pole zero diagram of an impedance Z has a pole at

*s*= - 6 and zero at

*s*= - 4 as shown in figure the constant multiplier

*k*= 1. For a signal I

_{s}= cos 6

*t*, the steady state voltage across Z is given in magnitude as u

0.6

0.84

7.2

none