Podcast
Questions and Answers
What happens when the amplitude sensitivity ka of the modulator is large enough to make |ka m(t)| >1 for any t?
What happens when the amplitude sensitivity ka of the modulator is large enough to make |ka m(t)| >1 for any t?
- The carrier wave disappears
- The carrier wave becomes under-modulated
- The carrier wave remains the same
- The carrier wave becomes over-modulated (correct)
What is the unit of measurement for the carrier amplitude Ac and the message signal m(t)?
What is the unit of measurement for the carrier amplitude Ac and the message signal m(t)?
- Watts
- Amps
- Volts (correct)
- Hz
What is the condition for the envelope to have the same shape as the message signal m(t)?
What is the condition for the envelope to have the same shape as the message signal m(t)?
- The amplitude of ka m(t) is always equal to unity
- The amplitude of ka m(t) is always greater than unity
- The amplitude of ka m(t) is always less than unity (correct)
- The amplitude of ka m(t) is randomly varying
What is the term for the absolute maximum value of ka m(t) multiplied by 100?
What is the term for the absolute maximum value of ka m(t) multiplied by 100?
What is the condition for the carrier frequency in relation to the message signal bandwidth?
What is the condition for the carrier frequency in relation to the message signal bandwidth?
What happens when the carrier frequency is not much greater than the highest frequency component W of the message signal?
What happens when the carrier frequency is not much greater than the highest frequency component W of the message signal?
What is the purpose of amplitude modulation?
What is the purpose of amplitude modulation?
What is the term for the amplitude of the modulated wave s(t)?
What is the term for the amplitude of the modulated wave s(t)?
What is the consequence of over-modulation?
What is the consequence of over-modulation?
What is the relationship between the amplitude of ka m(t) and unity in amplitude modulation?
What is the relationship between the amplitude of ka m(t) and unity in amplitude modulation?
Flashcards are hidden until you start studying
