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Question: What is the primary difference between Alternating Current (AC) and Direct Current (DC)?Op..
Question: What is the output of a half-wave rectifier when the input is a sine wave?Options: A sine ..
Question: What is the primary use of a Zener diode in AC circuits?Options: RectificationVoltage regu..
Question: What is the effect of increasing the frequency of an AC signal on a diode?Options: Increas..
Question: What is the depletion region in a semiconductor diode?Options: Region of high conductivity..
Question: What is the purpose of an operational amplifier (op-amp) in AC applications?Options: To co..
Question: What is the main characteristic of a FET?Options: Current-controlled deviceVoltage-control..
Question: In a BJT, what is the role of the base terminal?Options: To collect charge carriersTo cont..
Question: What is the primary function of a diode in an AC circuit?Options: To amplify the signalTo ..
Question: Which of the following is NOT a mode of operation for the 8051 timers?Options: Mode 0Mode ..
Question: How many 16-bit timers/counters are available in the 8051 microcontroller?Options: 1234Cor..
Question: What is the function of the \'TCON\' register in the 8051?Options: Timer controlInterrupt ..
Question: Which instruction is used to clear a specific bit in the 8051?Options: CLRCPLSETBANLCorrec..
Question: What is the size of the internal RAM in the 8051 microcontroller?Options: 128 bytes256 byt..
Question: Which pin of the 8051 microcontroller is used for external interrupt 0?Options: P0.0P1.0P2..
Question: What is the purpose of the \'MOV\' instruction in the 8051 assembly language?Options: To a..
Question: Which of the following is a special function register in the 8051?Options: AccumulatorProg..
Question: How many 8-bit registers does the 8051 microcontroller have?Options: 483216Correct Answer:..
Question: What is the maximum clock frequency of the 8051 microcontroller?Options: 1 MHz12 MHz24 MHz..
Question: Which of the following describes a SPDT switch?Options: Single Pole Double ThrowSingle Pol..
Question: What is the function of a pull-up resistor in a switch circuit?Options: To increase curren..
Question: What type of signal is typically used in digital circuits?Options: Analog signalDigital si..
Question: Which of the following is a common application of a relay?Options: To amplify signalsTo sw..
Question: What is the difference between a momentary switch and a latching switch?Options: Momentary..
Question: In a circuit, what is the purpose of a signal?Options: To provide powerTo indicate a state..
Question: What does a normally open (NO) switch do?Options: Allows current to flow when closedAllows..
Question: Which type of switch is commonly used to control lighting in a room?Options: Toggle switch..
Question: What is the primary function of a switch in an electrical circuit?Options: To increase vol..
Question: In a shift register, what does the term \'clock pulse\' refer to?Options: The speed of dat..
Question: What is the effect of a left shift operation on a binary number?Options: It multiplies the..
