1 Look at the circuit diagram thats shown in the figure Imme

1.   Look at the circuit diagram that\'s shown in the figure. Immediately after switch S1 is moved to the B position,

A. the voltage across R1 is at a maximum. B. the magnetic field surrounding L1 is at a minimum. C. the voltage across R2 is at a minimum. D. the magnetic field surrounding L1 is at a maximum. 2.   Look at the circuit diagram shown in the figure. An ammeter is being used to measure the current in the primary winding. The ammeter displays a reading of 2 A. Based on this ammeter reading, which of the following statements about the switch positions is correct?      A. Switch S1 and switch S2 are both closed. B. Only switch S3 is closed. C. All three of the switches are closed. D. Only switch S1 is closed. 3.   Look at the circuit diagram shown in the figure. When all three switches are closed, the power in the primary circuits is      A. less than that of any single secondary winding. B. reduced by eddy current losses. C. at maximum. D. 200 W. 4.   Look at the circuit that\'s shown in the figure. If the value of the resistor was increased to 1,000 , the total impedance of the circuit would      A. increase, because the total impedance of the circuit is equal to R. B. increase, because the circuit isn\'t resonant. C. be unaffected, since the values of C and L didn\'t change. D. be unaffected, since the frequency of the AC source didn\'t change.

Solution

1.D

2.B

3.c

4.B

5.B

6.D

7.A

8.c

9 D

10 c

11 D

12 B

13 B

14 B

15 d

16 b

17 d

18 D