Answer / starry

angle modulation :it is the process of varying angle of a
signal ( carrier signal) with respect to instaneous
amplitude of another signal known as message signal.
***
angle in the sense either frequency or phase.

amplitude modulation :it is the process of varying
amplitude of a signal ( carrier signal which is with zero
reference ) with respect to instaneous amplitude of another
signal known as message signal

noise :
unnecessary things occured in the process of modulation
that may be either amplitude or frequency or phase.

Answer / srikrishna

The answer above is completely in correct.,sorry to tell
this.

ANGLE MODULATION means

the angle (here angle means the phase of the signal or
frequency of the signal),of the carrier signal is varied in
accordance with the message signal.
here we dont change the charicteristic of the message
signal we have to change one of the charecterisic of the
carrier signal.

Amplitude modulation means the carrier amolitude is to be
varied with respect tothe message signal.

Noise means the unwanted signal frequencywhich is probed
into the actual required signal and effects the
charecteristics of the original signal.

noise is a wide band signal i.e. it will present at all
frequencies but at some frequencies the effect of noise may
be low.

Answer / d.dinesh

Angle Modulation:

Varying the frequency of the modulating signal
(message signal) with respect to carrier signal to
get a angle modulated signal

Amplitude Modulation:

Varying the amplitude of the message signal with
respect to carrier signal to get amplituted
modulated signal

Noise:

Noise is unwanted disturbances in a signal

What is op-amp?

0 Answers  

---

There is a toy train that can make 10 musical sounds. It makes 2 musical sounds after being defective. What is the probability that same musical sound would be produced 5 times consecutively? ( 1 of _____) ?

2 Answers   TCS,

---

What is meant by unidirectional or half-wave ac voltage controller?

0 Answers  

---

What is pulse width modulation?

0 Answers  

---

What is power electronics?

0 Answers  

---

---

Why does all cellular networks have same shape of sim?

0 Answers  

---

how call flow happening

8 Answers   Aricent, Black and Veatch, Ericsson, GTL, Idea, Kekran Mekran,

---

What is the feature’s in Group Policy? What is DNS? what is the use of DNS?

0 Answers   IBM,

---

Compare and Contrast- Diffusion and Drift Mechanisms

0 Answers  

---

What are the generating methods for SSB-SC signal.

2 Answers   NTPC,

---

formula for figure of merit

1 Answers   ISRO,

---

also send me aptitude question paper

0 Answers   IFFCO,

---