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Q1. | 8085 has 6 sign flags. |

A. | TRUE [Wrong Answer] |

B. | FALSE [Correct Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒

Match the following:

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

A. | RC coupled amplifier | 1. | Very low drift |

B. | Tuned amplifier | 2. | Flat frequency response from zero frequency onwards |

C. | Chopper stabilized amplifier | 3. | Flat frequency response with upper and lower cut off frequency |

D. | DC amplifier | 4. | Peak in gain frequency response |

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

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

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

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

⇒ A variable resistance R and capacitive reactance X

_{C}are fed by an voltage. The current locus is

a semi circle in 4th quadrant

a semi circle in first quadrant

a straight line in 4th quadrant

a straight line first quadrant

⇒ Consider the following mnemonics

- MOV
- ADD
- LXI

Which of the above are valid for 8085?1 and 2 only

1 only

1, 2 and 3

1 and 3 only

⇒ In figure, power in 6 Ω resistor is zero then

202∠45°

20 ∠30°

20 ∠45°

202∠30°

⇒ In an ac coordinate potentiometer, the currents inphase and quadrature potentiometer are adjusted to be

out of phase by 90°

in phase

out of phase by 45°

out of phase 180°

⇒ If D is diameter of circular waveguide the cutoff wave-length for TE

_{11}mode is equal to

1.706 D

2.11 D

0.82 D

0.41 D

⇒ A loudspeaker transformer has a turns ratio of 20 : 1. The speaker impedance is 20Ω. Primary impedance of transformer is

10 K

8 K

20 K

0.5 K

⇒ Program counter in a digital computer

counts the number of program run in the machine

counts the number of times a subroutine is called

counts the number of times the loops are executed

points the memory address of the current or the next instruction to be executed

⇒ The frame of an electric motor is earthed through three earthing plates resistances 30 Ω, 20 Ω and 10 Ω respectively. During fault the energy dissipated by three plates are W

_{1}, W

_{2}and W

_{3}. Then

W

_{1}> W

_{2}> W

_{3}

W

_{1}< W

_{2}< W

_{3}

W

_{1}= W

_{2}= W

_{3}

W

_{1}+ W

_{3}< W

_{2}

⇒ In the 2's complement Adder-Subtractor

sign magnitude numbers represent negative numbers

the sign magnitude numbers have "1" as leading bit

the sign magnitude numbers have '0' as leading bit

2's complement represents positive numbers

⇒ In a linear circuit, the superposition principle can be applied to calculate the

voltage and power

voltage and current

current and power

voltage, current and power

⇒ With increase in temperature, the electrical conductivity would

increase in metals as well as in intrinsic semiconductor

increase in metals but decrease in intrinsic semiconductor

decrease in metals but increase in intrinsic semiconductor

decrease in metals as well as in intrinsic semiconductor

⇒ The function δ'(

*t*-

*b*) is a unit doublet.

TRUE

FALSE

⇒ The received signal frequency at any time of a super-heterodyne receiver having IF = 456 kHz is 1 MHz. The corresponding image signal is

within the medium band

outside the medium band

depend upon modulation index

depends on Modulating frequency

⇒ Magnetic flux can be measured by

capacitive pick up

inductive pick up

resistive pick up

hall effect pick up

⇒ For a stable system having two or more gain crossover frequencies the phase margin is measured

at lowest gain crossover frequency

at highest gain crossover frequency

at the gain crossover frequencies

none of the above

⇒ In phase modulation, the phase deviation is

proportional to the amplitude of the signal and varies with frequency

remains constant while amplitude and frequency of signal varies

proportional to the amplitude of the signal and independent of the frequency

none of the above

⇒ A discrete random variable X takes values from 1 to 5 with probabilities as shown in the table. A student calculates the mean of X and 3.5 and her teacher calculates the variance of X as 1.5. Which of the following statements is t

Both the student and the teacher are right

Both the student and the teacher are wrong

Both the student is wrong but the teacher is right

The student is right but the teacher is wrong

⇒ For the K map in the given figure the simplified Boolean expressio

A C + A D + ABC

A C + A D + ABC

A C + A D + ACD

A C + A D + AB C

⇒ For a series R-L-C circuit, the characteristic equation is given

critically damped

underdamped

undamped

overdamped

⇒ A speech signal, band limited to 4kHz and peak voltage varying between + 5V and - 5V is sampled at the Nyquist rate. Each sample is quantized and represented by 8 bits. The number of quantization levels required to reduce the quantization noise by a factor of 4 would be

1024

512

256

64

⇒ What are the minimum number of 2 to 1 multiplexers required to generate a 2 input AND gate a 2 input Ex-OR gate?

1 and 2

1 and 3

1 and 1

2 and 2

⇒ In sign magnitude numbers,

the leading bit stands for the sign

the leading bit is part of the magnitude

the leading bit is always 0

the leading bit is always 1

⇒ In the epitaxial diffused method of fabricating integrating circuits the process involved are __________

- Epitaxial growth
- Diffusion
- Silicon diode growth
- Vacuum evaporation of aluminium
- Photoetching

1 - 2 - 3 - 4 - 5

1 - 3 - 5 - 2 - 4

3 - 1 - 4 - 5 - 2

1 - 3 - 2 - 4 - 5

⇒ In the wheatstone bridge in figure, each resistance is increased by 0.05%. The value of v

_{0}will

50 mV

5 mV

0.1 mV

zero

⇒ FM broadcast is used in

VHP range

UHF range

MF range

both VHP and UHF range

⇒ A 4 bit down counter starts counting from 1111 irrespective of modulus.

TRUE

FALSE

⇒ In the given figure, of potentiometer V

_{0}= V

*(R*

_{i}_{0}/R

*) only*

_{i}R

_{L}= 0

R

_{L}= ∞

R

_{L}is neither low nor high

R

_{L}is low but not zero

⇒ The maximum theoretical efficiency for class A amplifier is

0.125

0.25

0.5

0.75

⇒ In active filters inductances are divided because they

are always associated with same resistance

are bulky and unsuitable for miniaturization

are non linear

saturate quickly