SS2 Third Term Basic Electronics Past Questions And Answers
Basic Electronics questions for SS2 Third Term:
Question: What is the purpose of a Schmitt trigger in digital circuits?
a) Generate a square wave
b) Convert AC to DC
c) Provide hysteresis and noise immunity
d) Control voltage
Answer: c) Provide hysteresis and noise immunity
Question: Which type of logic gate performs the OR operation?
a) AND gate
b) NOT gate
c) OR gate
d) XOR gate
Answer: c) OR gate
Question: What does FPGA stand for in electronics?
a) Field Programmable Gate Array
b) Flexible Programmable Graphic Adapter
c) Frequency Phase Gain Amplifier
d) Fast Processing Graphics Accelerator
Answer: a) Field Programmable Gate Array
Question: In digital circuits, what is the purpose of a flip-flop?
a) Store data temporarily
b) Control voltage
c) Generate signals
d) Convert AC to DC
Answer: a) Store data temporarily
Question: Which type of diode is commonly used for voltage regulation and voltage reference?
a) Zener diode
b) Light-emitting diode
c) Schottky diode
d) Varactor diode
Answer: a) Zener diode
Question: What is the function of a phase-locked loop (PLL) in communication systems?
a) Amplify signals
b) Control voltage
c) Synchronize signals
d) Convert AC to DC
Answer: c) Synchronize signals
Question: Which electronic component is used to store large amounts of data in computers?
a) Resistor
b) Capacitor
c) Hard disk drive
d) Flip-flop
Answer: c) Hard disk drive
Question: What is the purpose of a crystal oscillator in electronic circuits?
a) Generate high-frequency signals
b) Store electrical energy
c) Control voltage
d) Convert AC to DC
Answer: a) Generate high-frequency signals
Question: In communication systems, what does the term “modulation” refer to?
a) Demodifying signals
b) Encoding data
c) Combining signals with a carrier wave
d) Filtering out noise
Answer: c) Combining signals with a carrier wave
Question: Which type of amplifier is designed to amplify a narrow range of frequencies?
a) Class A amplifier
b) Class B amplifier
c) Class C amplifier
d) Bandpass amplifier
Answer: d) Bandpass amplifier
Question: What is the function of a transducer in electronic systems?
a) Store electrical energy
b) Convert one form of energy into another
c) Control voltage
d) Generate signals
Answer: b) Convert one form of energy into another
Question: Which type of display technology is commonly used in TVs and computer monitors?
a) LED display
b) LCD display
c) OLED display
d) Plasma display
Answer: b) LCD display
Question: What is the purpose of a power MOSFET in electronic circuits?
a) Control voltage
b) Amplify signals
c) Store electrical energy
d) Convert AC to DC
Answer: a) Control voltage
Question: In digital systems, what is the function of a decoder?
a) Store data
b) Convert analog signals to digital
c) Decode binary information
d) Generate clock pulses
Answer: c) Decode binary information
Question: Which type of memory is non-volatile and can be electrically erased and reprogrammed?
a) RAM (Random Access Memory)
b) ROM (Read-Only Memory)
c) EEPROM (Electrically Erasable Programmable Read-Only Memory)
d) Flash memory
Answer: c) EEPROM (Electrically Erasable Programmable Read-Only Memory)
Question: What is the purpose of a voltage divider in electronic circuits?
a) Amplify signals
b) Control voltage
c) Store electrical energy
d) Convert AC to DC
Answer: b) Control voltage
Question: Which type of logic gate performs the XOR operation?
a) AND gate
b) NOT gate
c) OR gate
d) XOR gate
Answer: d) XOR gate
Question: What is the primary function of a differential amplifier?
a) Amplify the difference between two input voltages
b) Amplify signals
c) Store electrical energy
d) Convert AC to DC
Answer: a) Amplify the difference between two input voltages
Question: In a digital communication system, what is the purpose of error correction codes?
a) Encode data for security
b) Correct errors in transmitted data
c) Generate random data
d) Filter out noise
Answer: b) Correct errors in transmitted data
Question: What is the function of a power supply in electronic devices?
a) Control voltage
b) Generate signals
c) Convert AC to DC
d) Store electrical energy
Answer: c) Convert AC to DC.
