Question is ⇒ In a practical oscillator, the magnitude of loop gain Aβ is kept slightly larger than unity and the amplitude of oscillations is limited by, Options are ⇒ (A) the ratio of A to β, (B) the on set of non-linearity of amplifying device, (C) the linearity of amplifying device, (D) all of the above, (E) , Leave your comments or Download question paper.

Question is ⇒ In a practical oscillator, the magnitude of loop gain Aβ is kept slightly larger than unity and the amplitude of oscillations is limited by, Options are ⇒ (A) the ratio of A to β, (B) the on set of non-linearity of amplifying device, (C) the linearity of amplifying device, (D) all of the above, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	In a practical oscillator, the magnitude of loop gain Aβ is kept slightly larger than unity and the amplitude of oscillations is limited by
A.	the ratio of A to β [Wrong Answer]
B.	the on set of non-linearity of amplifying device [Correct Answer]
C.	the linearity of amplifying device [Wrong Answer]
D.	all of the above [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ Consider the following stateme
1, 4 are correct
1 and 2 correct
1, 2, 3 are correct
2, 3, 4 are correct

⇒ The V_TH at terminals A and B is equa
0 V
5 V
-5 V
none

⇒ Epitaxial growth is used in ICs
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

⇒ Consider the sequence x(n) whose fourier transform X(e^jω) is depicted for - p ≤ ω ≤ p as shown in fig
1 - True, 2 - True, 3 - True, 4 - True
1 - False, 2 - True, 3 - False, 4 - True
1 - True, 2 - False, 3 - True, 4 - False
1 - False, 2 - False, 3 - False, 4 - True

⇒

Assertion (A): In a perfect capacitor, the current density is given by ω ∈₀E₀∈^'_rcos(ωt + 90°), where ∈_r^' is real part of dielectric constant.

Reason (R): In a perfect capacitor, dielectric losses are zero.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true but R is false
A is false but R is true

⇒ A magnetic circuit has an iron length of 20 cm and air gap length 0.1 cm. If μ_r = 200 then
mmf for iron and air gap are equal
mmf for iron is much less than that for air gap
mmf for iron is much more than that for air gap
either (a) or (c)

⇒ In FM, increased depth of modulation increases
modulation
modulation index
bandwidth
all of the above

⇒ If D is mouth diameter of a paraboloid reflector, its directivity is proportional to
D
D²
D
D³

⇒ The frame of an electric motor is earthed through three earthing plates resistances 30 Ω, 20 Ω and 10 Ω respectively. During fault the energy dissipated by three plates are W₁, W₂ and W₃. Then
W₁ > W₂ > W₃
W₁ < W₂ < W₃
W₁ = W₂ = W₃
W₁ + W₃ < W₂

⇒

Assertion (A): TTL is a very popular logic in SSI and MSI category.

Reason (R): In Schottky TTL the power dissipation is less than in ordinary TTL.

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

⇒ In all pure metals, temperature coefficient of resistance is positive.
TRUE
FALSE

⇒

Assertion (A): If the reading of an instrument is low, the error is large.

Reason (R): The error of an instrument is certain percentage of its full scale deflection.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true

⇒ In the network of figure, the voltage drops across R₁, R₂, R₃ are 6 V, 8 V and 12 V with polarities as shown. The value of R_{312 Ω
8 Ω
5 Ω
3 Ω}

⇒ A coil has resistance R and inductance L. At ω = ∞ the phase angle between voltage and current is
0°
180°
45°
90°

⇒ The Thevenin Resistance of the circui
94/7 kΩ
54/7 kΩ
7/54 kΩ
0

⇒ In the graph of figure, the total number of tree
4
5
6
8

⇒ Consider the following statements regarding an antenna:

It is a transducer
Its performance is essentially frequency sensitive
It is a reciprocal device
With increase in its effective aperture area, width of the radiated beam increases.

Which of the above statements are correct?
1, 2 and 3
1, 2 and 4
2 and 3 only
1 and 4 only

⇒ What will be conversion rate for a counter type A/D converter contains a 4 bit binary ladder and a counter driven by a 2 MHz clock. Then conversion time
125
125 x 10³
125 x 10⁶
None

⇒ Rise time in a transistor is change from
10% of its final value to 90% of its final value
0% of its final value to 90% of its final value
10% of its final value to 100% of its final value
10% to its final value to 50% of its final value

⇒ The high voltage level of a digital signal in positive logic is
1
0
either 1 or 0
-1

⇒ The reverse saturation current of a diode does not depend on temperature.
TRUE
FALSE

⇒ A sine wave with slew rate distortion looks like
step wave
square wave
triangular wave
cosine wave

⇒ The MOSFET is almost ideal as a switching device because
it has linear characteristics
it works progressively
it consumes low power
it has longer life

⇒ The input impedance for folded dipole antenna (two half dipole) is
73 n²
377 n²
73 n
377 n

⇒ The colour code on a carbon resistor is yellow-violet-orange. The value of resistance is
17000 Ω
27000 Ω
37000 Ω
47000 Ω

⇒ A directional coupler is used
to transmit microwave signals
to generate microwave signals
to measure amplitude and phase of a travelling wave
both (a) and (b)

⇒ The reverse voltage applied to a varactor diode
is less than avalanche breakdown voltage
is more than avalanche breakdown voltage
may be more or less than a avalanche breakdown voltage
is very high as compared to avalanche breakdown voltage

⇒ The PSD and the power of a signal g(t) are respectively S_g(ω) and P_g, the PSD and the power of signal a.g(t) are respectively
aS²_g (ω) and a²P_g
aS_g² (ω) and aP_g
aS_g (ω) and a²P_g
aS_g (ω) and aP_g

⇒ The admittance parameter Y₁₂ in the 2 port network in the fi
-0.2 mho
0.1 mho
-0.05 mho
0.05 mho

⇒ A 12 bit ADC is used to convert analog voltage of 0 to 10 V into digital. The resolution is
2.44 mV
24.4 mV
1.2 V
none of the above