1. The unit of electric current is: A. Volt B. Ampere C. Ohm D. Watt Answer: B. Ampere 2. Which instrument is used to measure electric current? A. Voltmeter B. Ammeter C. Ohmmeter D. Wattmeter Answer: B. Ammeter 3. The unit of electric voltage is: A. Ampere B. Volt C. Ohm D. Joule Answer: B. … Read more
1. The primary function of an Analog-to-Digital Converter (ADC) is to: A. Convert a digital signal to an analog signal B. Convert an analog signal to a digital signal C. Amplify an analog signal D. Store digital data Answer: B. Convert an analog signal to a digital signal 2. In an ADC, the process of … Read more
1. A multiplexer is a combinational circuit that is used to: A. Select one of many inputs and send it to a single output B. Perform arithmetic operations C. Convert binary data into decimal D. Store data Answer: A. Select one of many inputs and send it to a single output 2. How many selection … Read more
1. A binary counter is used to: A. Add two binary numbers B. Store a sequence of bits C. Count the number of clock pulses D. Convert binary to decimal Answer: C. Count the number of clock pulses 2. A 4-bit binary counter can count up to: A. 4 B. 8 C. 16 D. 32 … Read more
1. In an SR flip-flop, what happens when both the Set (S) and Reset (R) inputs are high? A. The output is set to 1 B. The output is reset to 0 C. The output is undefined D. The output toggles Answer: C. The output is undefined 2. What is the primary limitation of the … Read more
1. The output of an AND gate is high (1) when: A. All inputs are high (1) B. At least one input is high (1) C. All inputs are low (0) D. At least one input is low (0) Answer: A. All inputs are high (1) 2. The output of an OR gate is high … Read more
1. The base of the binary number system is: A. 2 B. 10 C. 8 D. 16 Answer: A. 2 2. The base of the decimal number system is: A. 2 B. 8 C. 10 D. 16 Answer: C. 10 3. The base of the hexadecimal number system is: A. 2 B. 8 C. 10 … Read more
1. Digital electronics deals primarily with signals that are: A. Continuous B. Analog C. Discrete D. Mixed Answer: C. Discrete 2. A binary digit is also known as: A. Byte B. Bit C. Nibble D. Word Answer: B. Bit 3. The two possible states in a binary system are: A. 0 and 1 B. 1 … Read more
1. Wave shaping is the process of: A. Amplifying signals B. Changing the shape of a signal waveform C. Converting DC signals to AC signals D. Filtering noise from a signal Answer: B. Changing the shape of a signal waveform 2. The purpose of a clipping circuit in wave shaping is to: A. Eliminate high-frequency … Read more
1. Feedback in an electronic system refers to: A. The process of supplying energy to the system B. The process of feeding the output signal back into the input C. The resistance in the input circuit D. The voltage gain of the amplifier Answer: B. The process of feeding the output signal back into the … Read more