electric oscillators

#8. Which components form the resonant circuit and control the frequency of operation: 1. C1 2. L1 3. TR1 4. L2 5. C2

• A1 and 2 only
• B1, 2, 3, 5.
• C2, 3, 4, 5.
• D3 only

#1. The purpose of a basic Oscillator is to:

• Aamplify a signal
• Battenuate a signal
• Cproduce a sine wave from a DC input
• Dincrease the frequency of a sine wave

#2. A basic oscillator consists of 1. amplifier 2. positive feedback path 3. negative feedback path 4. frequency determining circuit 5. DC supply 6. AC supply

• A1, 3, 4, 5.
• B1, 2, 4, 5.
• C1, 3, 4, 6.
• D1, 2, 3.