Electrical Engineering MCQs for competitive tests, job tests, university exams are provided on various Electrical and Electronics topics.
Electrical Engineering XYZ MCQs Armature resistance control method is also termed as: Correct answer: 2. Constant torque control Explanation: Armature resistance control method is also termed as constant torque control.
Electrical Engineering XYZ MCQs In DC machine torque is proportional to which of the following: Correct answer: 3. Both of these Explanation: In a DC machine, the torque developed is proportional to both the armature current (Ia) and the flux (φ). The torque equation for a DC machine is given by: ΦT=K⋅Ia⋅Φ where: This equation … Read more
Electrical Engineering XYZ MCQs In DC machines, the shape of armature MMF wave is: Correct answer: 4. Triangular and directed towards brush axis Explanation: In DC machines, the shape of the armature MMF (magnetomotive force) wave is triangular and directed towards the brush axis. This triangular shape is a result of the winding arrangement on … Read more
Electrical Engineering XYZ MCQs Compensating winding is placed in the: Correct answer: 3. Pole shoe
Electrical Engineering XYZ MCQs Series field consists of ABC number of turns and XYZ conductors respectively. Here ABC and XYZ respectively imply: Correct answer: 4. Less and thick
Electrical Engineering XYZ MCQs Dummy coils are used for: Correct answer: 2. Mechanical balancing Explanation: Dummy coils are used for mechanical balancing.
Electrical Engineering XYZ MCQs Ward-Leonard control is generally a: Correct answer: 1. Armature voltage control Explanation: The Ward-Leonard control system is a method used to control the speed of a DC motor. In this system, a DC motor is connected to a generator, and the speed of the motor is controlled by varying the voltage … Read more
Electrical Engineering XYZ MCQs Under excited Synchronous phase modifier works as: Correct answer: 2. Shunt reactor
Electrical Engineering XYZ MCQs The method that can be used for changing power factor from leading to lagging: Correct answer: 4. Shunt reactor Explanation: Power factor is a measure of how effectively electrical power is being converted into useful work output. It can be leading or lagging, and adjusting it can have important implications for … Read more
Electrical Engineering XYZ MCQs The output of an OR gate is LOW when: Correct answer: 2. All inputs are LOW Explanation: An OR gate produces a HIGH output when at least one of its inputs is HIGH. Conversely, the output is LOW only when all of its inputs are LOW. This behavior is in line … Read more