Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.
Electrical Engineering XYZ MCQs If a Hexadecimal number needs to be converted to binary. For each hexadecimal digit, there will be how many bits: Correct answer: 4. 4 Explanation: Each hexadecimal digit corresponds to a group of four bits in binary representation. So, for each hexadecimal digit, there will be 4 bits. Therefore, the correct … Read more
Electrical Engineering XYZ MCQs A digital circuit that can store on bit is a: Correct answer: 4. Flip-flop Explanation: A flip-flop is a fundamental building block of digital circuits used to store binary data. It is a bistable multivibrator, which means it has two stable states and can remain in either state indefinitely until changed … Read more
Electrical Engineering XYZ MCQs Which of these sets of logic gates are designated as universal gates: Correct answer: 3. NOR, NAND Explanation: Universal gates are those logic gates from which all other basic logic gates can be derived. In other words, using only one type of gate, you can construct any other gate. The two … Read more
Electrical Engineering XYZ MCQs In binary number system the first digit (bit) from right to left is termed as: Correct answer: 2. LSB, Least Significant Bit Explanation: In binary number systems, a bit refers to a binary digit, which can either be a 0 or a 1. When representing numbers in binary, each digit’s position … Read more
Electrical Engineering XYZ MCQs An elevator drive is required to operate in which quadrant: Correct answer: 3. Four quadrants
Electrical Engineering XYZ MCQs What type of electrical drive is used in cranes: Correct answer: 4. Multi-motor Explanation: In the context of cranes, a multi-motor drive system refers to a setup where multiple motors are employed for driving different parts or functions of the crane. This could include motors for hoisting, trolley travel, and crane … Read more
Electrical Engineering XYZ MCQs Which of the following is a valid electrical braking method: Correct answer: 4. All of these Explanation: The term brake means to slow down, decelerate, or to reduce speed. The term AC motor braking refers to the method of causing an AC motor to brake, or slow down. All three of … Read more
Electrical Engineering XYZ MCQs The concept of V/f control of inverters driving induction motors results in: Correct answer: 3. Constant torque operation Explanation: V/f control is designed to maintain a constant ratio of voltage to frequency (V/f) across the speed range of the motor. This means that as the speed of the motor varies, the … Read more
Electrical Engineering XYZ MCQs In industries which electrical braking is generally preferred: Correct answer: 2. Regenerative braking Explanation: Regenerative braking takes the concept of dynamic braking one step further, in converting the DC bus over-voltage into usable AC power to be placed back on the AC line for other AC devices to use. Rather than … Read more
Electrical Engineering XYZ MCQs Electric drives are becoming more and more popular since: Correct answer: 4. All of these Explanation: Therefore, all of these factors contribute to the increasing popularity of electric drives in various industries and applications.