Question is ⇒ In figure the output v(t), Options are ⇒ (A) an amplitude modulated signal, (B) a frequency modulated signal, (C) a phase modulated signal, (D) none of the above, (E) , Leave your comments or Download question paper.

Question is ⇒ In figure the output v(t), Options are ⇒ (A) an amplitude modulated signal, (B) a frequency modulated signal, (C) a phase modulated signal, (D) none of the above, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	In figure the output v(t)
A.	an amplitude modulated signal [Wrong Answer]
B.	a frequency modulated signal [Correct Answer]
C.	a phase modulated signal [Wrong Answer]
D.	none 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 :

⇒ In a 3 phase full wave regulator feeding a star connected resistance load, firing angle is 75°. Then the number of thyristors conducting at one time is
1
2
3
4

⇒ At room temperature, the current in intrinsic semiconductor is due to
holes
electrons
ions
holes and electrons

⇒ In a forward biased p-n junction current enters p material as hole current and leaves n material as electron current of the same magnitude.
TRUE
FALSE

⇒ For emitter-couple logic, the switching speed is very high because
negative logic is used
the transistors are not saturated when conducting
emitter-coupled transistors are used
multi-emitter transistors are used

⇒ Line of sight transmission is used in
radio frequencies below 1 MHz
VHF only
audio signals only
VHF and UHF

⇒ FM broadcast lies in which band?
HF
SHF
UHF
VHF

⇒ A generator with an internal resistance of 600 Ω drives an amplifier whose input resistance is 400 Ω. The generator's open circuit voltages is 1 mV; the amplifier develops 100mV across an 8kΩ load. The voltage multiplication is
25
50
125
250

⇒ Two similar coupled coils are connected in series. The total inductance in series aiding connection is 100 mH. If currents is 3 A, the energy stored in magnetic field is
0.9 J
0.45 J
0.225 J
1.8 J

⇒ In a colour TV receiver SAW filter consists of
piezoelectric substrate on which are deposited two inter, digital transducers
photo conductive substrate which are deposited two inter digital transducers
photo voltaic substrate which are deposited two inter digital transducers
photo resistive substrate which are deposited two inter digital transducers

⇒ Which of the following is not a semiconductor?
Silicon
Calcium arsenide
Germanium
Zinc sulphide

⇒ A crystal is frequently used in digital circuits for timing purpose because of its
low cost
high frequency stability
simple circuitry
ability to set frequency at desired value

⇒ In a pneumatic bellows
the input surface, output surface and side walls are corrugated
the input surface and output surface are flat but the side walls are corrugated
the input surface and side walls are flat but the output surface is corrugated
the input surface and output surface are corrugated but the side walls are flat

⇒ In following circuit, steady state is reached with S open, S is closed at t = 0, the current I at t = 0⁺ is give
9 Ω
6 Ω
7 Ω
10 Ω

⇒

Assertion (A): If A = 0.5 ∠ 20°, A² = 0.25 ∠ 40°.

Reason (R): When drawing a phasor diagram, sinusoids may have the same or different frequencies.

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

⇒ Modem warfare has changed from large scale clashes of armies to suppression of civilian populations. Chemical agents that do their work silently appear to be suited to such warfare; and regretfully, there exist, people in military establishments who think that chemical agents are useful tools for their cause, which of the following statements best sums up the meaning of the above passage:
Modem warfare has resulted in civil strife.
Chemical agents are useful in modem warfare.
Use of chemical agents in warfare would be undesirable.
People in military establishments like to use chemical agents in war.

⇒ The rms voltage measured across each of the circuit element in figure is as shown, when the circuit is excited by a sinusoidal voltage E_s, the rms value of the source voltage e_{s10 volt
2 volt
E_s
5 volt}

⇒ A JK flip flop has t_pd= 12 ns. The largest modulus of a ripple counter using these flip flops and operating at 10 MHz is
16
64
128
256

⇒ In 8085 microprocessor, if interrupt service requests have been received from all of the following interrupts, then which one will be serviced first?
RST 5.5
RST 6.5
RST 7.5
None

⇒ In class C operation of an amplifier circuit, the collector current exists for
360° of input wave
180° of input wave
more than 180° of input wave
less than 180° of input wave

⇒ Wired AND connection can be used in TTL with totem pole output.
TRUE
FALSE

⇒ In figure, the function of resistor
to reduce ripples in the output
to improve voltage regulation
to limit the surge current
either (a) or (c)

⇒ A current of 3.18 A is flowing through resistance of 35.68 Ω. The voltage drop across resistance to the appropriate number of significant figures is
113.4624 V
113.462 V
113.46 V
113 V

⇒ Impedance inversion may be obtained with
a short circuited stub
a quarter wave line
an open circuited stub
a half wave line

⇒ DC voltage of the order of a few mV can be accurately of measured by
PMMC voltmeters
moving iron voltmeter
null balancing potentiometer
electrostatic voltmeter

⇒ Which of the following microphones is the cheapest?
Moving coil
Condenser
Ribbon
Carbon

⇒ It is required to study transients during switching process. Which CRO should be preferred?
Ordinary CRO
Dual beam CRO
Dual trace CRO
Storage oscilloscope

⇒ Consider an angle modulated si
10W
18W
20W
28W

⇒ A single phase half wave regulator uses
2 diodes and 2 thyristors
2 thyristors
1 diode and 1 thyristor
2 diodes

⇒ A first order system will never be able to give a __________ response

band stop
band pass
all pass

Choose the correct option
1, 2, 3 true
1 and 3 true, 2 false
1, 2 are true 3 is false
1, 2 are false, 3 is true

⇒ Schmitt trigger can be used as a
comparator
square-wave generator
flip-flop
all of these