15. A certain sine wave voltage has a positive-going zero crossing at 0 degree and a rms value of 20 V. The instantaneous value at the 33 degree is (а) 30V (b) 15.4 V (c) 17.2 V (d) 20.2 V 16. A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is increased, the voltage induced across the coil will (a) remain unchanged (b) decrease (c) increase 17. A sine wave voltage has a peak value of 12 V. Its rms value is (a) 8.485 V (b) 9.231 V (c) 15.421 V (d) 2.507 V 18. If the rms value of AC current through a 10 kN resistor is 5 mA, the rms value of voltage drop across the resistor is (a) 70.7V (b) 7.07V (c) 5V (d) 50 V

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15. A certain sine wave voltage has a positive-going zero crossing at 0 degree and a rms
value of 20 V. The instantaneous value at the 33 degree is
(а) 30V
(b) 15.4 V
(c) 17.2 V
(d) 20.2 V
16. A coil of wire is placed in a changing magnetic field. If the number of turns in the
coil is increased, the voltage induced across the coil will
(a) remain unchanged
(b) decrease
(c) increase
17. A sine wave voltage has a peak value of 12 V. Its rms value is
(а) 8.485 V
(b) 9.231 V
(c) 15.421 V
(d) 2.507 V
18. If the rms value of AC current through a 10 k2 resistor is 5 mA, the rms value of
voltage drop across the resistor is
(a) 70.7V
(b) 7.07V
(c) 5V
(d) 50 V
Transcribed Image Text:15. A certain sine wave voltage has a positive-going zero crossing at 0 degree and a rms value of 20 V. The instantaneous value at the 33 degree is (а) 30V (b) 15.4 V (c) 17.2 V (d) 20.2 V 16. A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is increased, the voltage induced across the coil will (a) remain unchanged (b) decrease (c) increase 17. A sine wave voltage has a peak value of 12 V. Its rms value is (а) 8.485 V (b) 9.231 V (c) 15.421 V (d) 2.507 V 18. If the rms value of AC current through a 10 k2 resistor is 5 mA, the rms value of voltage drop across the resistor is (a) 70.7V (b) 7.07V (c) 5V (d) 50 V
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