Practical Exam/Other general stuff

Question 1

How do you convert |gain| to gain in dB

Answer 1

20log (|gain|)

Question 2

Equation for the voltage of a transformer?

Answer 2

V(p)/V(s)=N(p)/N(s)

Question 3

Equation for the current of a transformer?

Answer 3

I(p)/I(s)=N(s)/N(p)

Question 4

Describe the transformer relationship of current turns and voltage

Answer 4

If the turns of the primary coil is less than the second coil then the transformer is a step up transformer that increases voltage in the second coil but decreases current

Question 5

What is the equation for gain?

Answer 5

V(out)/V(in)

Question 6

When does cut off frequency occur?

Answer 6

When 20log(|gain|) = 3 or when |gain|=1/2^0.5