A 5 mV, 1 kHz sinusoidal signal is applied to the input of an op-amp integrator for which R = 100 kΩ and C = 1 µF. the output voltage is:
A. $$\frac{1}{{40\pi }}\cos \left( {2000\pi t - 1} \right)$$
B. $$\cos \left( {2000\pi t - 1} \right)$$
C. $$\frac{{ - 1}}{{40\pi }}\cos \left( {2000\pi t - 1} \right)$$
D. $$ - \cos \left( {2000\pi t - 1} \right)$$
Answer: Option A
The action of JFET in its equivalent circuit can best be represented as a
A. Current controlled Current source
B. Current controlled voltage source
C. Voltage controlled voltage source
D. Voltage controlled current source
In a p+n junction diode under reverse bias, the magnitude of electric field is maximum at
A. The edge of the depletion region on the p-side
B. The edge of the depletion region on the n-side
C. The p+n junction
D. The center of the depletion region on the n-side
To prevent a DC return between source and load, it is necessary to use
A. Resistor between source and load
B. Inductor between source and load
C. Capacitor between source and load
D. Either A or B

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