# ICAR NET (UG/PG): Electronics MCQs (Practice_Test 8 of 13)

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1. A non inverting closed loop op amp circuit generally has a gain factor
1. Less than one
2. Greater than one
3. Of zero
4. Equal to one

2. If ground is applied to the (+) terminal of an inverting op-amp, the (—) terminal will
1. Not need an input resistor
2. Be virtual ground
3. Have high reverse current
4. Not invert the signal

3. The closed-loop voltage gain of an inverting amplifier equal to
1. The ratio of the input resistance to feedback resistance
2. The open-loop voltage gain
3. The feedback resistance divided by the input resistance
4. The input resistance

4. An ideal OP-AMP is an ideal
1. Current controlled Current source
2. Current controlled voltage source
3. Voltage controlled voltage source
4. voltage controlled current source

5. Calculate the cutoff frequency of a first-order low-pass filter for R1 = 2.5 k and C1 = 0.05 F
1. 1.273kHz
2. 12.73kHz
3. 127.3 kHz
4. 127.3 Hz

6. How many op-amps are required to implement this equation Vo = V1
1. 4
2. 3
3. 2
4. 1