Electric Circuits The capacitive reactance of an electric circuit is 50 Ohms. The frequency of supply becomes doubled. What is the new capacitive reactance? 50 Ohms. 200 Ohms. 25 Ohms. 100 Ohms. 50 Ohms. 200 Ohms. 25 Ohms. 100 Ohms. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be 3 / 2 Ω. 3 / 4 Ω. 4 / 3 Ω. 6 Ω. 3 / 2 Ω. 3 / 4 Ω. 4 / 3 Ω. 6 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits What is the real power in AC operation? None of these. Apperant power × cosφ. Both option A and B. VIcosφ. None of these. Apperant power × cosφ. Both option A and B. VIcosφ. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits In balanced bridge, if the positions of detector and source are interchanged, the bridge will still remain balanced. This can be explained from which theoem Compensation theorem Reciprocity theorem Thevinin's theorem Norton's theorem Compensation theorem Reciprocity theorem Thevinin's theorem Norton's theorem ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The hot resistance of a tungsten lamp is about 10 times the cold resistance. Accordingly, cold resistance of a 100 W, 200 V lamp will be 400 Ω. 4 Ω. 40 Ω. 800 Ω. 400 Ω. 4 Ω. 40 Ω. 800 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Which of the following are typical resistance and power-dissipation values for a carbon-composition resistor? 5000 ohms, 100W. 10 ohm, 50 W. 10000 ohms, 10 W. 1000000 ohms, 1 W. 5000 ohms, 100W. 10 ohm, 50 W. 10000 ohms, 10 W. 1000000 ohms, 1 W. ANSWER DOWNLOAD EXAMIANS APP
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