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Question 4 of 6

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Question 4 of 6

5.0 Points What is the amplitude of the AC household voltage in Switzerland? A. 156 V B. 120 V C. 220 V D. 311 V E. 170 V Reset Selection

Question 5 of 6

5.0 Points In order to be able to use your electronic equipment, you decide to construct a transformer. If the number of turns of the input coil is 1980, how many turns should the output coil have to obtain the voltage you want? A. 2560 B. 764 C. 1080 D. 3630 E. 5130 Reset Selection

Question 6 of 6

5.0 Points Will the transformer allow you to use your equipment? Select your answer from the following: A. Yes, the transformer will convert the voltage from 220 V to 120 V and at the same time convert the frequency from 50 Hz to 60 Hz, so the equipment can be used without any problems B. No. the transformer will convert the voltage from 220 V to 120 V, but the frequency has been converted to 91.7 Hz, so any equipment sensitive to the frequency cannot be used. C. No. the transformer will convert the voltage from 220 V to 120 V, but the frequency has been converted to 27.3 Hz, so any equipment sensitive to the frequency cannot be used. D. Yes, the transformer will convert the voltage from 220 V to 120 V, so the equipment can be used without any problems. Frequency? What's that!? E. No. the transformer will convert the voltage from 220 V to 120 V, but the frequency is still 50 Hz, so any equipment sensitive to the frequency cannot be used. Reset Selection

Explanation / Answer

part 4 )

Vmax = Vrms*sqrt(2)

Vmax = 220 * sqrt(2) = 311 V

part 5 )

Vp/Vs = Np/Ns

220/120 =1980/Ns

Ns = 1080

part 6 )

Yes ( A option )

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