Question: Man made noise are______________ variations?

• 1. Amplitude
• 2. Frequency
• 3. Phase
• 4. Both phase and frequency

Question: If level of modulation is increased ______________ power is increased?

• 1. Carrier
• 2. Sideband
• 3. Carrier as well as sideband
• 4. None of the above

Question: Demodulation is done in ________________?

• 1. Receiving antenna
• 2. Transmitter
• 3. Radio receiver
• 4. Transmitting antenna

Question: In radio transmission, the medium of transmission is ________________?

• 1. Space
• 2. An antenna
• 3. Cable
• 4. None of the above

Question: In TV transmission, picture signal is ______________ modulated?

• 1. Frequency
• 2. Phase
• 3. Amplitude
• 4. None of the above

Question: In a radio receiver, noise is generally developed at _______________?

• 1. IF stage
• 2. Receiving antenna
• 3. Audio stage
• 4. RF stage

Question: The signal voltage induced in the aerial of a radio receiver is of the order of ________________?

• 1. mV
• 2. µV
• 3. V
• 4. None of the above

Question: The signal voltage induced in the aerial of a radio receiver is of the order of_____________?

• 1. mV
• 2. µV
• 3. V
• 4. None of the above

Question: In a transmitter ____________oscillator is used?

• 1. Hartley
• 2. RC phase-shift
• 3. Wien-bridge
• 4. Crystal

Question: In an AM wave useful power is carrier by ______________?

• 1. Carrier
• 2. Sidebands
• 3. Both sidebands and carrier
• 4. None of the above