Answer: D. 197.For the circuit equivalent impedance is equal to 5∟30° Ω Define the circuit’s admittance.
197. For the circuit equivalent impedance is equal to 5∟30° Ω Define the circuit’s admittance. A).1∟30°S B).1∟-30°S C).0.5∟30°S D)0.2∟30°S E).0.2∟-30°S Solution: Z = 5/2 + (5Ö3)j / 2;
Y = 0.2Ð-30° S Answer: E
198. For series RC circuit voltage of the source is equal to 60cos(200t+20˚), V. What is period for the signal? A).31.4ms B)100ms C).100μs D).62.8s E). 62.8ms Solution: w=2pf = 2p / T => T = 2p / w = 6.28 / 200 = 31.4 ms Answer: A
199. What picture in fig.30 represents high-pass filter circuit?
Fig. 30
A).A B).B. C).C D).D E).E Answer: B 200. What picture in fig.30 represents low-pass filter circuit?
Fig. 30 A).A B).B. C).C D).D E).E Answer: A ANSWER KEYS.
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