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Q1. | Three point tracking can be achieved with |

A. | gang condenser [Wrong Answer] |

B. | variable selectivity [Correct Answer] |

C. | paddar capacitor [Wrong Answer] |

D. | any of the above [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss it below :Pavankumar Gnane Said on 2018-06-28 02:55:14PADDER CAPACIOR ONLY !! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ Mobility is directly proportional to Hall coefficient.

TRUE

FALSE

⇒ Ferrite have

low copper loss

low eddy current loss

low resistivity

higher specific gravity compared to iron

⇒ In figure the cut in voltage of diode is 0.7 V and its bulk resistance is 20 Ω. The peak value of circuit current of during positive and negative half cycles

10 mA and zero

9.12 mA and zero

9.3 mA and zero

zero and 9.12 mA

⇒ In equally tampered musical scale, an octave is divided into

12 intervals

10 intervals

7 intervals

5 intervals

⇒ The sum of two sine waves of different frequencies is a sine wave.

TRUE

FALSE

⇒ Which of the following statement about TRIAC is incorrect?

It is not particularly suited to A.C. or mains power control

Any one of its main terminals can be used either as cathode or as anode

It can be triggered in response to both positive and negative gate terminals

None of the above

⇒

**Assertion (A):** In Darlington pair, the overall β is product of individual β_{s}

**Reason (R):** The voltage gain of a base driven amplifier is equal to ac collector voltage divided by ac base voltage

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

⇒ A chopper

converts constant voltage dc into ac and then into variable voltage dc

converts constant voltage dc into variable voltage dc directly

converts ac of one frequency into ac of another frequency

converts ac to dc

⇒ A fascimile reproduction has a specification of 200 lines per frame, progressive scanning and 5 frames per second. The time to scan one line is

5 ms

2.5 ms

1 ms

0.1 ms

⇒ Magnetic deflection sensitivity is defined as

deflection/flux density

(deflection/flux density)

^{0.5}

(Deflection)

^{0.5}/flux density

none of the above

⇒ In case of antenna the lower value of Q indicates

higher bandwidth

lower bandwidth

higher distortion

lower distortion

⇒ In an ordinary thyristor

turn on and turn off times are equal

turn on time is more than turn off time

turn off time is more than turn on time

turn on time may be equal, less than or more than turn off time

⇒ Which of the following combinations is not used in thermocouple transducer measurement of temperature?

Iron-constantan

Chromel-aluminium

Copper-constantan

Iron-silver

⇒ A thermal power plant has an efficiency of 0.4. If 0.6 kg of coal is burnt to generate 1 kWh, the calorific value of coal is

about 3500 kcal/kg

about 2500 kcal/kg

about 1500 kcal/kg

about 7500 kcal/kg

⇒ Which of the following is susceptible to race condition?

R-S latch

D latch

Both R - S and D latches

None of the above

⇒ The F.T. of a conjugate symmetric function is always

imaginary

real

conjugate Unsymmetric

conjugate symmetric

⇒ A resistance of 5 ohms is connected in one branch of a network. The current in this branch is 2.2. A. If the resistance is increased to 7.5 Ω, the remaining circuit being the same, the current in this branch will be

2.2 A

less than 2.2 A

2.2 A or less than 2.2 A

2.2 A or less or more than 2.2 A

⇒ Thyristors connected in series need static and dynamic stabilizing circuits.

TRUE

FALSE

⇒ In the given figure, of potentiometer V

_{0}= V

*(R*

_{i}_{0}/R

*) only*

_{i}R

_{L}= 0

R

_{L}= ∞

R

_{L}is neither low nor high

R

_{L}is low but not zero

⇒ In an amplifier, if the output current flows for 120° of the input cycle, the class of amplifier will be

A

B

C

AB

⇒ Consider the resonant circuit as shown b

R = 10

^{4}L = 5 μH C = 20 pF

1000 L = 50 μH C = 200 pF

10 K L = 50 μH C =20 pF

None of these

⇒

**Assertion (A):** Peak to peak value of a sinusoidal wave is 2.828 times the rms value.

**Reason (R):** Peak factor of a sinusoidal wave is 1.414.

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

⇒ For a wave

*v*= V

_{1m}sin (ω

*t*+ θ

_{1}) - V

_{3m}sin (3ω

*t*+ θ

_{3}), the rms value is (0.5 V

^{2}

_{1m}+ 0.5 V

^{2}

_{3m})

^{0.5}

TRUE

FALSE

⇒ For an n-channel enhancement type MOSFET, if the source is connected at a higher potential than that of the bulk (V

_{SB}> 0), the threshold voltage V

_{T}of the MOSFET will

remain unchanged

decrease

change Polarity

increase

⇒ The signal m(

*t*) = 10 cos 100 p

*t*is sampled at the rate of F

_{s}= 75 H

_{z, }then determine signal after sampling.

4 cos 100 p

*t*+ 8 sin 200 p

*t*

4 cos 100 p

*t*+ 8 sin 200 p

*t*+ cos 75 p

*t*

4 cos 25 p

*t*+ 8 sin 50 p

*t*+ cos 75 p

*t*

none

⇒ The addition of a pole to the open loop transfer function pulls the root locus

to the right

to the left and making the system more stable

towards right or left depending on the position of new pole

none of the above

⇒ If A = 3 +

*j*1, A

^{4}=

3.16 ∠18.4°

100 ∠73.72°

100 ∠18.4°

3.16 ∠73.22°

⇒ Which of the following is true?

SOP is a two level logic

POS is a two level logic

Both SOP and POS are two level logic

Hybrid function is two level logic

⇒ Which of the following statement is incorrect?

Z

_{0}is an ac characteristic that is the same for any length of time

The characteristic impedance can be measured approximately with a sensitive ohm meter

A line terminated in its Z

_{0}is a flat or non-resonant line

A twin lead has higher Z

_{0}but lower losses than coaxial cable

⇒ Dolby system of noise reduction divides the total audio spectrum into

8 frequency bands

4 frequency bands

2 frequency bands

none of the above