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Q1. | Identification of highest priority interrupt can be achieved in a minimum time by which of the following schemes? |

A. | Hardwired polling [Correct Answer] |

B. | Priority encode circuit [Wrong Answer] |

C. | Software polling [Wrong Answer] |

D. | Subdivision of interrupt register into a number of sub registers which are checked parallely [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 :**

⇒ An

*m*derived and constant

*k*filter section connected in cascade give

proper impedance matching

proper phase shift characteristic

proper attenuation characteristic

all of the above

⇒ Absolute permeability (μ) is given by __________ henry/metre

4p x 10

^{-12}

4p x 10

^{-7}

8.854 x 10

^{-12}

8.854 x 10

^{-7}

⇒ In the figure shown, assume that all the capacitors are initially unchanged and V

_{i}(

*t*) = 10 U(

*t*) volts then V

_{0}(

*t*) is give

8

*e*

^{-0.004t}volts

8 (

*j*-

*e*

^{-0.004t}) volts

8

*u*(

*t*) volts

8 volts

⇒

**Assertion (A):** To add 8 bit words, two 1C 74181 can be cascaded.

**Reason (R):** In 1C 74181 a sum greater than 15 leads to high carry out.

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 correct R is wrong

A is wrong R is correct

⇒ The most common method for biasing a JFET is

reverse bias

self bias

voltage divider bias

none of the above

⇒ For the circuit shown in the figure, the time constant RC = 1 ms. The input voltage is V

_{1}(

*t*) = 2 sin 10

^{3}

*t*. The output voltage V

_{0}(

*t*) is equa

sin (10

^{3}

*t*- 45°)

sin (10

^{3}

*t*+ 45°)

sin (10

^{3}

*t*- 53°)

sin (10

^{3}

*t*+ 53°)

⇒ Which of the following operations will give the result 2 in C?

42857

4.0 / 2

4.0 / 2.0

4 / 2.0

⇒ A Si sample is doped with a fixed number of group N impurities. The electron density

*n*is measured from 4 K to 1200

*k*for the sample. Which one of the following is correct?

n remains constant over the temperature range

n increases monotonicaliy with increasing temp

n increases first remains constant over a range and again increases with increasing temperature

n increases show a peak and then decrease with temperature

⇒ High frequency inductors and capacitors are commonly plated with silver. The main purpose of this is to

reduce dc resistance

reduce ac resistance

increase dc resistance

increase ac resistance

⇒ The factor n in the equation for calculating current for a silicon diode is

1

2

2.5

2 for low levels of current and 1 for high levels of current

⇒

**Assertion (A):** In CC amplifier the collector is at ac ground

**Reason (R):** CC amplifier is also called emitter follower

Both A and R are correct and R is correct explanation for A

Both A and R are correct but R is not correct explanation for A

A is correct R is wrong

A is wrong R is correct

⇒ In a radio detector

stabilization against signal strength variation is provided

linearity is worse than in a phase discriminator

the circuit is the same as in discriminator except that diodes are reversed

output is twice that obtainable from a similar phase discriminator

⇒ If the mantissa has a sign bit of 0 and the exponent is changed from a negative number to a more positive number the result is

a positive number and closer to zero

a positive number and away from zero

a negative number

a negative number and closer to zero

⇒ Which of the following conditional statements is not valid in Pascal?

If A > = B then B : = C + D + X

If (N = 45) THEN X : = X + 2 ELSEX : = 0

If A < = B then A : = C * D

If (A > = B) X : Y else X : = Z

⇒ For measurement of high voltage capacitors the suitable bridge is

Wien bridge

modified De Sauty bridge

Schering bridge

either (a) or (b)

⇒ A higher value of Standing Wave Ratio indicates

least mismatch between line and load

greater mismatch between load and line

number of nodes is equal to the number of antinodes

none of the above

⇒

**Assertion (A):** In the interaction region of magnetron an electron is subjected to three forces: force due to electric field, force due to magnetic field and centrifugal force.

**Reason (R):** The mechanism of generation of microwaves, in a magnetron, involves interaction of electromagnetic fields with electrons moving in static electric and magnetic fields oriented at right angles to each other.

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 correct but R is wrong

A is wrong but R is correct

⇒ In an SSB transmitter one is most likely to find

class C audio amplifier

tuned modulator

class B RF amplifier

class AB power amplifier

⇒ The given figure shows three Nyquist plots of G(

*s*) H(

*s*) =

*e*/[

^{-sT}*s*(

*s*+ 1)] for different values of T. The curves 1, 2, 3 ca

for T = 0, 0.5 and 1 respectively

for T = 1, 0.5 and 0 respectively

for T = 0.5, 1 and 0 respectively

for T = 0, 1 and 0.5 respectively

⇒ In figure which is correct at any time

*t*

I =

I =

I =

I =

I =

*i*_{R}+*i*_{L}I =

*i*_{R}+*i*_{L}*i*_{C}I =

*i*_{R}+*i*_{L}-*i*_{C}I =

*i*_{R}-*i*_{L}-*i*_{C}

⇒ In 8085, F register has 8 bits.

TRUE

FALSE

⇒ The degradation of satellite solar cells with time is mainly due to

their bombardment by electrons

collection of meteoric dust

increase in resistivity of silicon

gradual leakage of charge carriers from the semiconductor material

⇒ The static equalisation circuit for thyristors connected in series is

one resistor in series with each thyristor

one resistor in parallel with each thyristor

one resistor and one capacitor in parallel with each thyristor

none of the above

⇒ Beam width of an antenna is expressed in

metres

degrees

ratio of two powers

ratio of two angles

⇒ In a BCD to 7 segment decoder the minimum and maximum number of outputs active at any time is

2 and 7

3 and 7

1 and 6

3 and 6

⇒ Which of the following arithmetic operations requires only one operand in FORTRAN 77?

Addition

Multiplication

Negative

Substraction

⇒ The relative permeability of an iron specimen is 400 when B = 0.2 T. If B = 0.4 T, μ

400

less than 400

more than 400

more or less than 400

⇒ Which antenna is a wideband antenna?

Hertz antenna

Marconi antenna

Folded dipole

None of the above

⇒

A-3, B-4, C-1, D-6

A-3, B-2, C-5, D-4

A-5, B-4, C-1, D-2

A-5, B-4, C-1, D-6

⇒ A 12 bit ADC is operating with 1 μs clock period. Total conversion time is 14 μs. ADC is

flash type

counting type

integrating type

successive approximation type

⇒ In 8085, F register has 8 bits.

TRUE

FALSE

⇒ The degradation of satellite solar cells with time is mainly due to

their bombardment by electrons

collection of meteoric dust

increase in resistivity of silicon

gradual leakage of charge carriers from the semiconductor material

⇒ The static equalisation circuit for thyristors connected in series is

one resistor in series with each thyristor

one resistor in parallel with each thyristor

one resistor and one capacitor in parallel with each thyristor

none of the above

⇒ Beam width of an antenna is expressed in

metres

degrees

ratio of two powers

ratio of two angles

⇒ In a BCD to 7 segment decoder the minimum and maximum number of outputs active at any time is

2 and 7

3 and 7

1 and 6

3 and 6

⇒ Which of the following arithmetic operations requires only one operand in FORTRAN 77?

Addition

Multiplication

Negative

Substraction

⇒ The relative permeability of an iron specimen is 400 when B = 0.2 T. If B = 0.4 T, μ

_{r}will be400

less than 400

more than 400

more or less than 400

⇒ Which antenna is a wideband antenna?

Hertz antenna

Marconi antenna

Folded dipole

None of the above

⇒

Match the following:

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

A. | R_{T} | 1. | A = D |

B. | R_{h} | 2. | h_{12} = h_{21} |

C. | S_{T} | 3. | AD - BC = 1 |

D. | S_{h} | 4. | h_{21} = - h_{21} |

5. | B = C | ||

6. | Δh = 1 |

A-3, B-4, C-1, D-6

A-3, B-2, C-5, D-4

A-5, B-4, C-1, D-2

A-5, B-4, C-1, D-6

⇒ A 12 bit ADC is operating with 1 μs clock period. Total conversion time is 14 μs. ADC is

flash type

counting type

integrating type

successive approximation type