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Q1. | In order to rectify sinusoidal signals of millivolt range (< 0.6 V) |

A. | bridge rectifier using diodes can be employed [Wrong Answer] |

B. | full wave diode rectifier can be used [Wrong Answer] |

C. | a diode is to be inserted in the feedback loop of an op-amp [Correct Answer] |

D. | a diode is to be inserted in the I/P of an op-amp [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss 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 :**

⇒ In Modulation, "carrier" is

resultant wave

speech voltage to be transmitted

voltage with constant frequency, phase or amplitude

voltage for which frequency, phase or amplitude is varied

⇒ An ideal current source has

infinite source resistance

zero source resistance

large value of source resistance

finite value of source resistance

⇒ For a type 0 system and unit ramp input, the steady state error is

0

∞

1

1/K

_{V}⇒ 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

⇒ The function of shunt in an ammeter is to

by pass the current

increase sensitivity of meter

increase resistance of meter

all of the above

⇒ When number of quantization levels are two; then the average transmission power in NRZ polar signaling is __________ that of NRZ unipolar signaling

42737

42739

42743

none of these

⇒

**Assertion (A):** In C it is possible for functions to call themselves.

**Reason (R):** C makes use of 'Pointers'.

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 equation ∇ . J = 0 is called

Poisson's equation

Kirchoff's node equation

Continuity equation for static currents

Continuity equation for sampling currents

⇒ The slope of log magnitude curve changes by - 40 dB/decade at a certain frequency and the error between asymptote and actual curve is positive. This means that

a double pole is present

a pair of complex conjugate poles is present

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neither (a) nor (b)

⇒ In 8085, which of the following is an 8 bit register?

A

SP

PC

both (a) and (b)

⇒ Which one of the following is the correct statement of the system characterized by the equation

*y*(

*t*) =

*a*

*x*(

*t*) +

*b*?

linear for any value of

*b*

linear if

*b*> 0

linear if

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non-linear

⇒ A parallel plate capacitor has area of plate A and plate separation

*d*. Its capacitance is C. A metallic plate P of area A and negligible thickness is added as shown in Figure. The new value of capacitance

C

2C

0.5 C

0.25 C

⇒ What are the counting stages (Q

_{1}, Q

_{2}) for the counter shown in the figure be

11, 10, 00, 11, 10, ...

01, 10, 11, 00, 10, ...

00, 11, 01, 10, 00, ...

01, 10, 00, 01, 10, ...

⇒

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

⇒ In a loss line R

_{L}< Z

_{0}, then

Reflection coefficient is zero

Reflection coefficient is ∞

Reflection coefficient is negative

Reflection coefficient is positive

⇒ To increase Q factor of a coil, the wire should be

long

thin

thick

long and thin

⇒

Match the following:

List I (Symbol in Java comparison operator) | List II (Meaning) | ||
---|---|---|---|

A. | = = | 1. | Greater than or equal to |

B. | ! = | 2. | Equal |

C. | > = | 3. | Not equal |

A-1, B-2, C-3

A-3, B-2, C-1

A-1, B-3, C-2

A-2, B-3, C-1

⇒ Oscillator with best frequency stability is

Crystal oscillator

Phase shift oscillator

Clapp oscillator

Hartley oscillator

⇒ When the carrier is unmodulated, a certain transmitter radiates 9 kW when the carrier is sinusoidally modulated the transmitter radiates 10.125 kW. The modulation index will be

0.1

10.15

0.4

0.5

⇒ A line of characteristic impedance 400 Ω is terminated by a resistance of 400 Ω. The reflected quantities are

zero

equal to incident quantities

half the incident quantities

double the incident quantities

⇒ Consider the following statements:

- If any root of characteristic equation has a positive real part the impulse response is unbounded and system is unstable.
- If all the roots of a characteristic equation have negative real parts, the impulse response decays to zero.
- If one or more non-repeated roots of characteristic equation are on
*j*ω axis impulse response is bounded but the system is unstable.

1, 2 and 3

1 and 2 only

1 and 3 only

2 and 3 only

⇒ What is the addressing mode used in instruction MOV M, C?

Direct

Indirect

Induced

Immediate

⇒ The dielectrics having only one kind of atoms are known as elemental dielectrics.

TRUE

FALSE

⇒ The decoder for PAL system is

similar to NTSC decoder

similar to NTSC decoder supplemented by 64 ms delay line

similar to NTSC decoder supplemented by 64 ms delay line and an electronic commutator

either (b) or (c)

⇒ Poynting vector is the rate of energy flow having

W/m

^{2}

W-m

kWh/s

W/m

⇒ Which circuit is called swamped amplifier?

CC

CE

CB

Both (a) and (b)

⇒ QAM stands for

Quasi-Amplitude Modulation

Quadrature Angle Modulation

Quadrature Amplitude Modulation

None of the above

⇒ Which one of the following theorem can be conveniently used to calculate the power consumed by the 10 Ω resistor in the network shown in the above fig

Thevenin's theorem

Maximum power transfer theorem

Millman's theorem

Superposition theorem

⇒ The minimum decimal equivalent of the number 11C0 is

183

194

268

269

⇒ The main drawbacks of EEPROM are

low density

high cost

both low density and high cost

none of the above