Question: 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

Question: How many op-amps are required to implement this equation Vo = V1?

• 1. 4
• 2. 3
• 3. 2
• 4. 1

Question: How many op-amps are required to implement this equationop-amps?

• 1. 2
• 2. 3
• 3. 4
• 4. 1

Question: The ideal OP-AMP has the following characteristics:

• 1. Ri=∞ ,A=∞ ,R0=0
• 2. Ri=0 ,A=∞ ,R0=0
• 3. Ri=∞ ,A=∞ ,R0=∞
• 4. Ri=0 ,A=∞ ,R0=∞

Question: 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

Question: 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

Question: 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

Question: 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

Question: Calculate the cutoff frequency of a first-order low-pass filter for R1 = 2.5kΩ and C1 = 0.05μF___________?

• 1. 1.273kHz
• 2. 12.73kHz
• 3. 127.3 kHz
• 4. 127.3 Hz

Question: In an electric press mica is used_____________?

• 1. as an insulator
• 2. as a device for power factor improvement
• 3. for dielectric heating
• 4. for induction heating