Electronic Principles - Section 3 | Multiple Questions and Answers

46.	An audio transformer has a turn ratio of 9, What is its impedance ratio?

	A.	81
	B.	85
	C.	6
	D.	9

47.	Which one of the following statements is true?

	A.	The secondary voltage for a step-down power transformer is greater than the primary voltage
	B.	The secondary current for a step-down power transformer is greater than the primary voltage
	C.	Parallel RLC circuit operated below its resonant frequency
	D.	purely resistive circuit

48.	How many protons does the nucleus of a silicon atom contain?

	A.	4
	B.	29
	C.	14
	D.	48

49.	A circuit has two different voltage sources that are connected in a series-opposing form. If the sources are rated at 6 V and 9 V, what is the total source voltage?

	A.	3 V
	B.	16 V
	C.	7.5 V
	D.	8 V