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Q1. | For an N bit ADC, the percentage resolution is [1/2^{N} - 1)] 100. |

A. | TRUE [Correct Answer] |

B. | FALSE [Wrong Answer] |

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

⇒ In household energy meters the flux of series magnet is in phase with current but the flux of shunt magnet lags the voltage by 88°. The reading of energy meters

will be correct

will have a negative error

will have a positive error

may have positive or negative error

⇒ In 8085 microprocessor, if instruction RST is written in a program then the program will jump to location

0020 H

0024 H

0028 H

002 CH

⇒ 71

_{8}= __________ .

111000

_{2}

111001

_{2}

100001

_{2}

110001

_{2}

⇒ The distance at which a sky wave is received back on earth decreases with angle of incidence for all angles of incidence.

TRUE

FALSE

⇒ The merger of hole and free electron is called

covalent bonding

recombination

thermal energy

free electrons

⇒

**Assertion (A):** Even if TTL gates and CMOS gates used in a realization have the same power supply of + 5 V, suitable circuit is needed to interconnect them

**Reason (R):** V_{OH}, V_{OL}, V_{IH} and V_{IL} of a TTL gave are respectively 2.4, 0.4, 2 and 0.8 V respectively. If supply voltage is + 5 V. V_{IL} and V_{IH} for CMOS gate for the supply voltage of + 5 V are 1.5 V and 3.5 V respectively.

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 specific gravity of tungsten is 13.8 and its atomic weight is 184.0 Assume that there are two free elements per atom. Then the Fermi level or characteristic energy for the crystal in

*e*V will be

8.95

*e*V

-8.95

*e*V

7.326

*e*V

-7.326

*e*V

⇒ Consider the following statements

- The sign of a floating point number depends on the sign of mantissa only.
- If the absolute value of a number is less than 1, the sign of exponent is zero or positive.
- With sign bit of mantissa as 0, increasing the exponent from a positive to a more positive value gives a larger floating point number.

All

1 and 2 only

1 and 3 only

2 and 3 only

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

Differentiating amplifier

Integrating amplifier

Logarithmic amplifier

Exponential amplifier

⇒ In the TTL circuit in the figure, S

_{2}to S

_{0}are select lines and X

_{7}to X

_{0}are input lines. S

_{0}and X

_{0}are LSBs. The output

Indeterminate

A ⊕ B

A ⊕ B

C . A ⊕ B + C . (A ⊕ B)

⇒ A material has conductivity of 10

^{5}mho/m and permeability of 4p x 10

^{-7}H/m. The skin depth at 9 GHz is

1.678 μm

26 μm

17 μm

32.32 μm

⇒ A delta modulation system is designed to operate at 3 times the Nyquist rate for a signal with a 3 KHz bandwidth. The quantization step size is 250 mv. The maximum amplitude of a 1 KHz input sinusoidal for which the delta modulator does not show slope overload is :

716.2 mV

500 mV

647.87 mV

400 mV

⇒ Two coils X of 1000 turns and Y of 2000 turns are placed such that 60% of the flux produced by coil X links coil Y. A current of 1 A in coil X produces 0.1 wb flux. The mutual inductance between coils is

0.12 H

0.08 H

0.06 H

0.04 H

⇒ A pulse train can be delayed by a finite number of clock periods by using

serial in-serial out shift register

parallel in serial out shift register

serial in-parallel out shift register

parallel in parallel out shift register

⇒ The voltage at which Avalanche occurs is known as

cut in voltage

barrier voltage

breakdown voltage

depletion voltage

⇒ A capacitor does not allow sudden changes

in currents

in voltage

in both current and voltage

neither of two

⇒ Value of 'K' for the system for which the system is stab

*K*< 1

*K*> 1

*K*< 2

*K*> 2

⇒ The main reason why Ni-Zn ferrites are used for audio and T.V. transformers is that

they have large saturation magnetization

they are easy to fabricate by rolling

they are totally free from pores and voids

they have a high electrical resistivity

⇒ The input to an op-amp integrating amplifier is a constant voltage. The output will be

a constant voltage

a sawtooth wave

a ramp

ac voltage

⇒ In figure what is value of I

_{C}if β

_{dc}= 100. Neglect V

_{BE5 mA5 μA10 mA10 μA}

⇒

Match the following:

List I (Functional headings of instruction set of 8085) | List II (Functions performed) | ||
---|---|---|---|

A. | Branch group | 1. | Compares, rotates etc. |

B. | Logic group | 2. | Moves, loads, stores etc. |

C. | Data transfer group | 3. | Initiates conditional or unconditional jumps, calls etc. |

A-1, B-2, C-3

A-2, B-3, C-1

A-3, B-1, C-2

A-1, B-3, C-2

⇒ The following statements are true with respect to "Cascode Amplifier".

- The reduction in
*h*_{12}and Miller capacitance result in negligible reverse internal feedback. - A's is large loads cannot be connected.
- As a narrow band amplifier, it provides small range of
*c*_{μ}is reduced. - As a narrow band amplifier it provides small range of frequencies parameters the effect of
*c*_{μ}reduces.

only 1

only 1 and 4

only 2 and 4

only 1 and 3

⇒ In a lead acid battery

the numbers of positive and negative plates are equal

the number of positive plates may be equal to or more than the number of negative plates

the number of positive plates is more than the number of negative plates

the number of negative plates is more than the number of positive plates

⇒ Which one of following is correct for broadside array?

Direction of radiation is perpendicular to axis

Also perpendicular to the plane

Current is fed of equal amplitude equal phase

All

⇒ Frequency modulation consists in

varying the frequency and amplitude of the carrier in accordance with the instantaneous value of modulating signal

varying the amplitude of the carrier in accordance with the instantaneous value of the modulating voltage

varying the frequency of the carrier voltage in accordance with the instantaneous value of the modulating voltage

vary the frequency of the carrier voltage

⇒ The 1150 kg geosynchronous satellite INSAT-IA parked 36000 km above India had greatly improved India's

intelligence gathering capacity

domestic communications

meteorological capability

both (b) and (c)

⇒ In two wattmeter method of 3 phase power measurement, when does one wattmeter read negative

when power factor is less than 0.5 lagging

when power factor is greater than 0.5 lagging

when power factor is less than 0.5

when power factor is unity

⇒ Consider the following features:

- negative operands cannot be used
- when immediate operand changes, the program should be reassembled
- the program is difficult to read
- the size of operand is restricted by word length of the computer

1 and 2

2 and 4

2 and 3

1 and 4

⇒ The PIV of a bridge rectifier is less than that of full wave rectifier with centre tapped transformer.

TRUE

FALSE

⇒

Match the following:

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

A. | CTFS | 1. | Periodic |

B. | DTFS | 2. | Non-periodic |

C. | CTFT | ||

D. | DTFT |

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

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

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

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