1. What are the advantages of integrated circuits (ICs)?
a) Low cost and small size
b) Reduced power consumption
c) Increased reliability and ruggedness
d) All of the above
Answer: d) All of the above
Explanation: Integrated circuits offer advantages such as low cost due to mass production, compact size, reduced power consumption, and improved reliability compared to discrete components.
2. Which of the following is not a characteristic parameter of integrated circuits (ICs)?
a) Power dissipation
b) Operating temperature range
c) Maximum clock frequency
d) Voltage gain
Answer: d) Voltage gain
Explanation: Voltage gain is a characteristic of specific components like amplifiers, not integrated circuits as a whole.
3. What is the basic building component of integrated circuits?
a) Transistor
b) Resistor
c) Capacitor
d) Diode
Answer: a) Transistor
Explanation: Transistors are the fundamental building blocks of integrated circuits, used for various functions such as amplification and switching.
4. Which of the following configurations does not belong to operational amplifiers (op-amps)?
a) Dual input balanced output differential amplifier
b) Dual input unbalanced output differential amplifier
c) Single input balanced output differential amplifier
d) Single input unbalanced output differential amplifier
Answer: c) Single input balanced output differential amplifier
Explanation: Operational amplifiers typically involve configurations with dual inputs and either balanced or unbalanced outputs.
5. What is the block diagram of an operational amplifier (op-amp) composed of?
a) Resistors and capacitors
b) Transistors and diodes
c) Voltage sources and amplifiers
d) Differential input stage, gain stage, and output stage
Answer: d) Differential input stage, gain stage, and output stage
Explanation: The block diagram of an op-amp typically includes these three stages: a differential input stage, a gain stage, and an output stage.
6. Which of the following is a characteristic of an ideal operational amplifier (op-amp)?
a) Infinite input impedance
b) Zero output impedance
c) Infinite bandwidth
d) All of the above
Answer: d) All of the above
Explanation: Ideal op-amps are assumed to have infinite input impedance, zero output impedance, and infinite bandwidth in theoretical analysis.
7. What is the primary function of the power supply configurations for op-amps?
a) Provide a stable operating voltage
b) Amplify the input signal
c) Control the gain
d) Set the bandwidth
Answer: a) Provide a stable operating voltage
Explanation: Power supply configurations for op-amps ensure a stable and appropriate operating voltage to enable proper amplification of input signals.
8. Which type of differential amplifier is characterized by two inputs and two outputs that are both balanced?
a) Dual input balanced output differential amplifier
b) Dual input unbalanced output differential amplifier
c) Single input balanced output differential amplifier
d) Single input unbalanced output differential amplifier
Answer: a) Dual input balanced output differential amplifier
Explanation: In a dual input balanced output differential amplifier, both inputs are utilized, and both outputs are balanced.
9. In which configuration does an operational amplifier (op-amp) have a single input and an unbalanced output?
a) Dual input balanced output differential amplifier
b) Dual input unbalanced output differential amplifier
c) Single input balanced output differential amplifier
d) Single input unbalanced output differential amplifier
Answer: d) Single input unbalanced output differential amplifier
Explanation: This configuration involves a single input and an unbalanced output.
10. What is the purpose of differential amplification in operational amplifiers (op-amps)?
a) To amplify the difference between two input voltages
b) To amplify the sum of two input voltages
c) To invert the input signal
d) To provide high impedance at the input
Answer: a) To amplify the difference between two input voltages
Explanation: Differential amplification in op-amps amplifies the voltage difference between the two input terminals while rejecting common-mode signals.