Q1. | If the op-amp in figure has a unity gain frequency of 1 MHz, the cut off frequenc |

A. | 100 kHz [Correct Answer] |

B. | 1 MHz [Wrong Answer] |

C. | 10 MHz [Wrong Answer] |

D. | 90 MHz [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 :**

⇒ Two voltages 50 V each have a phase difference of 45°. The rms value of resultant sum of the two voltages is

70.7 V

80.4 V

92.4 V

100 V

⇒ E7F6

_{16}= __________ .

600000

_{10}

59382

_{10}

9382

_{10}

382

_{10}

⇒ In 8085 microprocessor, how many lines are there in address bus?

6

8

12

16

⇒ The integral of a unit impulse is unit step function.

TRUE

FALSE

⇒ The output

*y*(

*t*) of a linear time invariant system is related to its input

*x*(

*t*) by the following equation

*y*(

*t*) = 0.5

*x*(

*t*-

*t*

*+ 1) +*

_{d}*x*(

*t*-

*t*

*) + 0.5*

_{d}*x*(

*t*-

*t*

*+ 7). The filter transfer function*

_{d}*H*(ω) of such a system is given by

(1 + cos ωt)

*e*

^{-jωt}

*d*

(1 + 0.5 cos ωt)

*e*

^{-jωt}

*d*

(1 + cos ωt)

*e*

^{jωt}

*d*

(1 - 0.5 cos ωt)

*e*

^{-jωt}

*d*

⇒ The analog signal given below is sampled at 1200 samples per second.

*m(t)*= 2 sin 120 p

*t*+ 3 sin 240 p

*t*+ 4 sin 360 p

*t*+ 5 sin 480 p

*t*+ 6 sin 600 p

*t*+ 7 sin 720 p

*t*. The folding (maximum) frequency is __________ .

300 H

*z*

360 H

*z*

600 H

*z*

480 H

*z*

⇒

**Assertion (A):** Schottky transistors are preferred over normal transistors in digital circuits

**Reason (R):** A Schottky transistor when used as a switch, between cutoff and active region.

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

⇒ A square corner reflector is used in which of the following?

TV broadcast

Point-to-point communication

Radio astronomy

All of the above

⇒

Match the following:

List I (Oscillator) | List II (Features) | ||
---|---|---|---|

A. | Wien Bridge | 1. | RF oscillator, uses two inductors and one capacitor |

B. | Colpitt's | 2. | LC oscillator for radio frequencies uses three capacitances and one inductance |

C. | Hartley | 3. | RC oscillator for audio frequencies |

D. | Clapp | 4. | RF oscillator, uses two capacitances and one inductance |

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

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

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

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

⇒ In binomial arrays the elimination of secondary lobes takes place

at the cost of directivity

at the cost of gain

both (a) and (b)

none of the above

⇒ Minimum number of 2-input NAND gates required to implement the function F = (x + y) (Z + W) is

3

4

5

6

⇒ If

*p*is the probability of success and

*q*is the probability of failure, then the probability that there are

*r*successes in

*n*trails is

^{n}

*c*

_{r}

*p*

^{r}*q*

^{n}

^{-}

^{r}

^{n}*c*

_{r}

*p*

^{n -}

^{r}*q*

^{r}^{n}

*c*

_{r}

*p*

^{r}*q*

^{n}

^{+}

^{r}

^{n}*c*

_{r}*p*

^{n}*q*

^{n}^{- r}

⇒ Vividh Bharati programme is transmitted in

short wave

medium frequency

very high frequency

all of the above

⇒ In a varactor diode the increase in width of depletion layer results in

decrease in capacitance

increase in capacitance

no change in capacitance

either (a) or (b)

⇒ The function

*f*= A ⊕ B ⊕ A ⊕ D ⊕ E ⊕ C ⊕ D ⊕ E ⊕ F ⊕ G ⊕ F ⊕ G ⊕ C ⊕ E ⊕ A ⊕ D ⊕ B ⊕ E ⊕ E ⊕ B ⊕ B ⊕ B ⊕ B ⊕ D can be written as

A ⊕ B ⊕ D

A ⊕ B ⊕ E

A ⊕ E

A ⊕ E

⇒ Which of the following oscillator is not in FM?

Crystal oscillator

Hartley oscillator

Colpitts oscillator

All of the above

⇒ If transmitted power is 10 kW, the field strength at a distance

*d*is 50 mV/m. If transmitted power is reduced to 2.5 kW, the field strength at the same point will be

25 mV/m

12.5 mV/m

6.25 mV/m

3.125 mV/m

⇒ The resonance frequency of the circui

5.4 K

*n*

_{2}

4.5 K

*n*

_{2}

5 K

*n*

_{2}

∞

⇒ Temporary register in 8085 is a 16 bit register.

TRUE

FALSE

⇒ Epitaxial growth is used in IC

*s*

because it produces low parasitic capacitance

because it yields back to back isolating

*pn*junction

to grow single crystal

*n*doped silicon on a single crystal

*p*type substrate

to grow selectively single crystal

*p*doped silicon of one resistivity on a

*p*type substrate of a different resistivity

⇒

**Assertion (A):** For networks in figure (1) and (2) sum of products of branch voltages and branch currents at any time is zero.

**Reason (R):** The networks in figure (1) and (2) are not the same structura

Both A and R are true and R is correct explanation of A

Both A and R are true and R is not the correct explanation of A

A is true but R is false

A is false but R is true

⇒ The main advantage of TDM over FDM is that it

needs less power

needs less bandwidth

needs simple circuitry

gives better S/N ratio

⇒ Figure shows an R-L circuit. The current is *i* = 1 - *e*^{-t}. The rate of change of current at *t* = 1 secon

1 A/s

0.63 A/s

0.37 A/s

0

⇒ When a plane wave travelling in free space is incident normally on a medium having ε_{r} = 4.0, then fraction of power transmitted into the medium is given by

42956

42737

42738

42861

⇒ A 37 bit mantissa has an accuracy of

6 decimal places

8 decimal places

10 decimal places

11 decimal places

⇒ A single phase semiconverter has a freewheeling diode. If the firing angle is a and the load is purely resistive, the periods of conduction and freewheeling respectively are

p - a and 0

p - a and a

p + a and 0

p + a and a

⇒

**Assertion (A):** Manufacturer's quote *h* parameters of transistor

**Reason (R):** *h* parameters of a transistor are easiest to measure

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

⇒ Consider the following statements about directional coupler shown in the fi

1 and 2 only

3 and 4 only

1, 2 and 3

2, 3 and 4

⇒ An ac circuit has an impedance of (3 +

*j*6) ohm for fundamental. The impedance for fifth harmonic is

(15 +

*j*30) Ω

(15 +

*j*6) Ω

(3 +

*j*30) Ω

(3 +

*j*1.2) Ω

⇒ It is best to use for coupling a coaxial line to a parallel wire transmission line.

directional Coupler

balun

slotted line

tee