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Circuits and Circuit Theory - Interview Questions and Answers

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11. Form factor for a sine wave is
A. 1.414
B. 0.707
C. 1.11
D. 0.637
Explanation: ANSWER : : 1.11 Explanation :
12. The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of______degrees.
A. 90
B. 60
C. 45
D. 30
Explanation: ANSWER : : 45 Explanation :
13. A heater is rated as 230 V, 10 kW, A.C. The value 230 V refers to
A. average voltage
B. r.m.s. voltage
C. peak voltage
D. none of the above
Explanation: ANSWER : : r.m.s. voltage Explanation :
14. For a sine wave with peak value Imax the r.m.s. value is
A. 0.5 Imax
B. 0.707
C. 0.9
D. 1.414 Lmax
Explanation: ANSWER : : 0.707 Explanation :
15. For a frequency of 200 Hz, the time period will be
A. 0.05 s
B. 0.005 s
C. 0.0005 s
D. 0.5 s
Explanation: ANSWER : : 0.005 s Explanation :
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