ADC Test 1 2024

What is the course code of your course ADC?

• EC301

• EC205

• EC207

• EC202

In a communication system, the information/data is converted to signal form with the help of a

• Transmitter

• Transducer

• Sampler

• Filter

The primary role of a Transmitter is _____.

• Filtering

• Sampling

• Modulation

• Amplification

The spectrum of human voice lies in which of the following ranges?

• 10Hz-4000Hz

• 100Hz-20000Hz

• 100Hz-250Hz

• 0 - 1000Hz

• 100Hz

• 1100Hz

• 200Hz

• 2200Hz

• 100Hz

• 1100Hz

• 200Hz

• 2200Hz

A carrier signal of 1000 Volts is amplitude modulated by an audio signal to produce 30% AM. What is the amplitude of the audio signal?

• 333 Volts

• 300 Volts

• 150 Volts

• 750 Volts

A 240 KHz, 10 Vpp carrier wave is amplitude modulated using a 1 KHz sine wave of 3 Vpp. What is the modulation index?

• 3.3

• 0.3

• 0.54

• 0.66

Which of the following detection technique is preferred for Conventional AM?

• Coherent Detection

• Envelope Detection

• Both

• None

Why is modulation required? Select the options that are correct.

• For efficient transmission of baseband signal for longer distances.

• For practical antenna size.

• For multiplexing

• For reducing bandwith.