B. According to the expression of instantaneous value, the effective voltage of the primary coil is 220V, and the turns ratio of the primary coil and the secondary coil is 5: 1. According to the fact that the voltage is proportional to the number of turns, the voltage of the secondary coil is 44V, and the input power in the primary coil is 44244=44W, so B is wrong.
C. According to the expression of instantaneous value, the effective voltage of the primary coil is 220V, and the turns ratio of the primary coil and the secondary coil is 5: 1. According to the fact that the voltage is proportional to the number of turns, the voltage of the secondary coil is 44V, so the indication of voltmeter V is 44V, so C is wrong;
The reading of voltmeter is the effective value of voltage. According to the analysis of A, the effective value of the secondary coil is 1 10V, so the voltmeter reads 1 10V, so C is wrong.
D. From the expression of instantaneous value, the effective voltage of the primary coil is 220V, and the turns ratio of the primary coil and the secondary coil is 5: 1. According to the voltage is proportional to the number of turns, the secondary winding voltage is 44V, then the input power is equal to the output power, 220I 1=44244, so the primary winding current is 0.2A, so D is correct;
So choose: D.