Home Latest Jobs Syllabus Projects Previous Question Papers Entrance Exam Notifications Multiple Choice Question

AP ECET ELECTRONICS AND COMMUNICATION ENGINEERING (ECE) Multiple Choice Questions (MCQs)

AP ECET Digital Electronics MCQs

AP ECET Digital Electronics MCQs (91-105)

91. Which of the following is the correct binary representation of the decimal number 10?

A) 1010 B) 1100 C) 1011 D) 1110

Answer: A) 1010

92. Which logic gate is represented by the Boolean expression A.B?

A) AND gate B) OR gate C) NOT gate D) NAND gate

Answer: A) AND gate

93. Which of the following is a valid Boolean expression for an OR gate?

A) A + B B) AB C) A' D) A / B

Answer: A) A + B

94. What is the output of a NAND gate when both inputs are high?

A) Low B) High C) Undefined D) Zero

Answer: A) Low

95. Which of the following is the Boolean simplification of the expression A + A'B?

A) A + B B) A C) A'B D) AB

Answer: A) A + B

96. What is the output of an XOR gate when both inputs are the same?

A) High B) Low C) Indeterminate D) Undefined

Answer: B) Low

97. What is the function of a half-adder?

A) Adds two binary numbers with carry input B) Adds two binary numbers without carry C) Adds two binary numbers with carry output D) Multiplies two binary numbers

Answer: B) Adds two binary numbers without carry

98. Which flip-flop has the characteristic that its output changes only on the application of a clock pulse?

A) D flip-flop B) SR flip-flop C) JK flip-flop D) T flip-flop

Answer: A) D flip-flop

99. Which of the following is a characteristic of a JK flip-flop?

A) It has no invalid state B) It is edge-triggered C) It has only two states D) It has an invalid state

Answer: A) It has no invalid state

100. Which of the following is a primary type of memory in digital electronics?

A) Transistor B) RAM C) Capacitor D) Inductor

Answer: B) RAM

101. Which type of memory is non-volatile and can be electrically erased and reprogrammed?

A) ROM B) Flash ROM C) RAM D) DRAM

Answer: B) Flash ROM

102. What is the main difference between ROM and RAM?

A) ROM is writable; RAM is not B) ROM is faster than RAM C) RAM is volatile; ROM is non-volatile D) RAM is non-volatile; ROM is volatile

Answer: C) RAM is volatile; ROM is non-volatile

103. Which of the following is a type of binary-weighted D/A converter?

A) Resistor network B) R-2R ladder C) Digital signal processor D) Operational amplifier

Answer: A) Resistor network

104. Which of the following is a type of A/D converter that uses a binary search algorithm?

A) Counter type A/D converter B) Successive approximation A/D converter C) Flash A/D converter D) Ramp type A/D converter

Answer: B) Successive approximation A/D converter

105. What does a counter-type A/D converter do?

A) Converts analog signals to digital using a counter mechanism B) Uses a ramp signal for conversion C) Performs successive approximation D) Measures the frequency of a signal

Answer: A) Converts analog signals to digital using a counter mechanism

<< Previous Page l Next Page >>

Note/Caution: studentsbizz.com does not promise a job or an interview in exchange for money. Fraudsters may ask you to pay under the pretext of a registration fee or refundable fee, but please be aware that legitimate employers will not require such payments.