Question

SHORT ANSWER Weite the T imeter 200 cant iron core re-10x 102 1- 2A Figare 123 12) See Figure 12.5, A flux of s 10-5 Wh exists in this magnetic ciecult, permeability of ai 12) is 4π· 10-7 wb/A-n, what is the magretning force of ee air gap? MULTIPLE CHOICE Choose the one alternative that best completes the statement or answers the question. 13) Which of the terms below describes the ratio of the number of tums of the primary to the numbert 13) of turns to the secondary? A) Primary ratio C) Secondary turns B) Flux ratio D) Tr ratio 14) Which of the following describes the impedance appearing at the primary of a tranoformer dus a load connected to the secondary? A) Reflected impedance Q) Mutual impedance B) Load impedance D) Resonant impedance 1 ohm 0.1 ohms 1:10 Figure 22.7 an ideal transformer 15) E) 513 A 15) Referring to the circuit shown in Figure 22.7, the 0.1 Q resistor is connected by with a turns ratio of 1:10 to a 100 V AC voltage source. The primary current I is given by D) 9.33 A )9.1 A A) 50 A B) 99.01 A

Answer 1

primy to secendary tum s called turns Yati o trarxifamation raeConsy to secondary totrv pr mary furns 14 11o rinoxyt5 alled Refkted impedance. eph on fCircut to secon 2. 1 X loo0 - 9ms pima cunent -, ophi on