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Q1. | If the oscillator output is modulated by audio frequencies upto 10 kHz, the frequency range occupied by the side bands will be |

A. | 711.9 kHz to 712.1 kHz [Wrong Answer] |

B. | 702 kHz to 722 kHz [Correct Answer] |

C. | 692 kHz to 732 kHz [Wrong Answer] |

D. | 71.2 kHz to 71.20 kHz [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss 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 resistors

*R*

_{1}= 36 Ω ± 5% and

*R*

_{2}= 75 Ω ± 5% are connected in series. The total resistance is

111 ± 0 Ω

111 ± 2.778 Ω

111 ± 5.55 Ω

111 ± 7.23 Ω

⇒

**Assertion (A):** If we overdrive an amplifier the output signal may get clipped

**Reason (R):** To dissipate heat to atmosphere a heat sink is sometimes attached to the case of transistor

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

⇒ An amplifier without feedback has a voltage gain of 50, input resistance of 1 kΩ and output resistance of 2.5 kΩ. The input resistance of the current shunt -

*ve*feedback amplifier using the above amplifier with a feedback factor of 0.2 is

1/11 kΩ

1/5 kΩ

5 kW

11 kW

⇒ Examine the following statements

- A small size hydraulic actuator can develop good torque.
- It is easy to maintain a hydraulic system leak proof.
- Both linear and rotatary hydraulic actuators are available.
- Hydraulic power is more easily available than electric power.

all

1 and 2 only

1 and 3 only

2, 3 and 4 only

⇒ An 8156 has A

_{15}connected to its CE input. A

_{14}to A

_{8}are unconnected, and AD

_{7}to AC

_{0}are connected.Ignoring shadows, the port addresses

80 H

85 H

82 H, 83 H

80 H to 85 H

⇒ What are the ultimate purpose of minimizing logic expressions?

- To get small size expression.
- To reduce the number of variables in the given expression.
- To implement the function of the logic expression with least hardware.
- To reduce the expression for making it feasible for hardware implementation.

1 only

2 and 3

3 only

3 and 4

⇒ Leakage current approximately doubles for every 10°C increase in the temperature of a transistor has I

_{CBO}= 400 nA at 25°C, then its leakage current at 80°C

10 μA

18 μA

20 μA

15 μA

⇒ For a second order instrument, the optimum range of ξ (damping ratio), which gives good frequency response over a wide range of frequencies is

0.5 to 0.6

0.6 to 0.7

0.7 to 0.8

0.8 to 1.0

⇒ What are the values of E

_{max}and E

_{min}displayed on the oscilloscope, when a 1 kV

*P*-

*P*carries is modulated to 50%?

2 kV, 0.5 kV

1 kV, 0.5 kV

0.75 kV, 0.25 kV

0.5 kV, 1.5 kV

⇒ In CE approximation, the upper end of d.c. load line is called the __________ point and the lower end is the __________ point.

Q, base

base, Q

saturation, cut off

cut off, saturation

⇒ Which of the following devices is used at the first stage of an electronic voltmeter?

BJT

SCR

MOSFET

UJT

⇒ An op-amp has zero gain for common mode inputs. Then CMRR =

zero

infinite

high

low

⇒ Which of the following is not correct?

Voltmeter should have a very high resistance

An ammeter should have a very low resistance

A shunt should have a very low resistance

An electronic voltmeter draws appreciable current from source

⇒ In any network of linear impedances the current flowing at any point equal to algebric sum of currents caused to flow at that point by each of the emf taken separately with all other emfs reduced to zero. The statement represents.

KCL

Norton's theorem

Thevenin's theorem

Superposition theorem

⇒ In a series operated thyristor configuration, each thyristor should support 100 V. However, the three thyristors only support voltage of 100 V, 90 V and 85 V respectively. Hence, the string efficiency in the case is :

0.9845

0.4584

0.9167

none of these

⇒ Hexadecimal number E is equal to binary number

1110

1101

1001

1111

⇒ If A = 16 ∠64°, (A)

^{0.5}is

4∠64°

4∠8°

4∠128°

4∠32°

⇒ In a line VSWR of a load is 6 dB. The reflection coefficient will be

0.033

0.33

0.66

3.3

⇒ DeMorgan's second theorem is

A . A = 0

A = A

A + B = A . B

AB = A + B

⇒ Fortran 77 has six arithmetic operators.

TRUE

FALSE

⇒ If

*f*(

*t*) is an even function, the coefficients F

_{n}in the exponential form of Fourier series

are real

are imaginary

are complex

may be real or imaginary

⇒ Half power point directions for broadside is

60°

30°

45°

at any angle

⇒ In a series R-L circuit when excited by a 1 volt battery the current is 1 -

*e*

^{-t}. If it is excited by a source 2 sin

*t*, the current will be

2 sin (

*t*- 45°) +

*e*

^{-t}

2 sin (

*t*+ 45°) +

*e*

^{-t}

sin (

*t*- 45°) +

*e*

^{-t}

sin (

*t*+ 45°) +

*e*

^{-t}

⇒ A certain network has two ideal voltages sources and a large number of ideal resistances. The power consumed in one of the resistances is 4 W when either of two sources is active and the other source is active and the other source is short circuited. When both sources is short circuited.When both sources are active, the power consumed in the same resistor would be

zero or 16 W

4 W or 8 W

zero or 8 W

8 W or 16 W

⇒ A tape recorder and deck are entirely similar.

TRUE

FALSE

⇒ A wire has a resistance R ohm. If another wire of the same material and same weight has double the diameter (as compared to the first wire), the resistance of the second wire will be

0.5 R

0.25 R

0.125 R

R/16

⇒ ROC of sequence

*x*[

*n*] = δ[

*n*] is

Not exist

*z*= 0

Entire Plane

Entire Plane expect

*z*= 0,

*z*= ∞

⇒ The rotation of direction of E field of a linearly polarized wave passing through a magnetised ferric medium is called

Lorentz rotation

Faraday rotation

Steinmitz rotation

Fleming's rotation

⇒ The range of memory location in given memory interfacing scheme

0000H - 07FFH

F800H - FFFFH

0000H - 03FFH

0000H - 3FFFH

⇒

Match the following:

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

A. | Direct addressing | 1. | MOV A, M |

B. | Register addressing | 2. | MOV C, A |

C. | Register indirect addressing | 3. | LDA 7 |

D. | Immediate addressing | 4. | STA FFC |

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

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

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

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