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Which of the following statements is false? | |
A. | Push pull signals are equal and opposite in phase [Wrong Answer] |
B. | Class AB operation cannot be used for a push pull audio power output phase [Correct Answer] |
C. | A push pull output transformer has a centre-tapped primary [Wrong Answer] |
D. | All of the above [Wrong Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
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voltage series
current series
voltage shunt
current shunt
⇒ As compared to BJT, MOSFET has
lower switching losses and higher conduction losses
higher switching losses and higher conduction losses
higher switching losses and lower conduction losses
lower switching losses and lower conduction losses
⇒ A 300 V voltmeter has an accuracy of ± 2% of full scale deflection. When the reading is 222 V, the actual voltage
lies between 217.56 and 226.44 V
lies between 217.4 and 226.6 V
lies between 216 and 228 V
is exact 222 V
⇒ The amount of time between the creation and disappearance of a hole in an intrinsic semiconductor material is called
life cycle
recombination time
life time
half life
⇒ The MOS symbols shown indica
1, 3, 6
2, 4, 6
1, 3, 5
2, 3, 6
⇒ The signal define by the equations u(t - a) = 0 for t < a and u(t - a) = 1 for t ≥ a is
a unit step function
a shifted unit step function orginating at t = a
a pulse function
none of the above
⇒ Choose the function f(t), - ∞ < t < + ∞, for which a Fourier series cannot be defined
3 sin (25t)
4 cos (20t + 3) + 2 sin (10t)
exp - | t | sin 25 t
1
⇒ In a polyatomic gas, the types of polarization which exist together are
electronic and orientational
electronic and ionic
ionic and orientational
electronic, orientational and ionic
⇒ The ROC of sequence in the Z.T. of sequence x[n] = a^{n} ∪ [n] is
z > a
z < a
|z| > a
|z| < a
⇒ For a sine wave the average value is calculated over half the cycle.
TRUE
FALSE
⇒ In broadcast television, the number of lines per frame is chosen to be odd number to
reduce the required bandwidth
improve resolution
reduce peak power requirement
make interlacing easier
⇒ If an admittance Y(s) has a term Ks, the realization would give
an inductance of value K
a resistance of value K
a capacitance of value K
either (a) or(c)
⇒ A characteristic property of crystal is its periodicity of structure.
TRUE
FALSE
⇒ For pole-zero plot shown, the system is ________
minimum phase
maximum phase
mixed phase
none of these
⇒ Schottky clamping is resorted to in TTL gates
to reduce propagation delay
to increase noise margin
to increase packing density
to increase fan out
⇒ In a wave the electric field lines are vertical. Then the wave is
horizontally polarized
vertically polarized
either (a) or (b)
neither (a) nor (b)
⇒ Figure shows the variation of Z(ω) for a positive real function. The functio
RC impedance
RL impedance
RLC impedance
Reactance function
⇒ Kirchoff's laws are applicable to
dc circuits
circuits with sinusoidal excitation only
dc circuits and circuits with sinusoidal excitation
circuits with any excitation
⇒ Find R_{L} for maximum power tran
3 Ω
1.125 Ω
4.17 Ω
none
⇒ For a MOS capacitor fabricated on a P-type semiconductor, strong inversion occurs when
surface potential is equal to Fermi potential
surface Potential is greater than Fermi potential
surface potential is - ve and equal to Fermi potential in magnitude
surface potential is + ve and equal to twice the Fermi potential
⇒ In a single stage differential amplifier, the output offset voltage is basically dependent on the mismatch of
V_{BE}, I_{B} and β
V_{BE} and I_{B}
I_{B} and β
V_{BE} and β
⇒ In a lag network the input frequency is 100 f_{c} where f_{c} is critical frequency. The voltage gain is
0 dB
-20 dB
-40 dB
-60 dB
⇒ Ground wave propagation is useful for
microwave
medium wave
short wave
long distance
⇒ A voltage V(t) is a Gaussian ergodic random process with a mean of zero and a variance of 4 volt^{2}. If it is measured by a dc meter. The reading will be
0
4
2
2
⇒
Assertion (A): Linear ICs include audio amplifier, wideband amplifier, RF amplifier and IF amplifier
Reason (R): The error voltage in a feedback circuit is very small
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 full adder is to be implemented using half adders and OR gates. A 4 bit parallel adder without any initial carry requires
8 half adders and 4 OR gates
8 half adders and 3 OR gates
7 half adders and 3 OR gates
7 half adders and 4 OR gates
⇒ Consider z transform of a signal as given b
IIR
FIR
Depends on value of n
Cannot determined
⇒ Which memory does not require programming equipment?
RAM
EPROM
EEPROM
UVPROM
⇒
Match the following:
List I | List II | ||
---|---|---|---|
A. | Title bar | 1. | Window menu |
B. | Control menu box | 2. | First row of window |
C. | start-button | 3. | box in title bar |
D. | Control | 4. | Button on mouse |
A-3, B-2, C-4, D-1
A-2, B-3, C-4, D-1
A-3, B-2, C-1, D-4
A-2, B-3, C-1, D-4
⇒ The subcarrier frequency for transmission of colour difference signals in TV systems in India is
9.47 MHz
4.43 MHz
2.06 MHZ
1.3 MHz