Inductors Questions and Answers
Inductors are essential components in electronics circuits that store energy in a magnetic field when electrical current flows through them. Understanding inductors is crucial for candidates preparing for GATE, ISRO, DRDO, and ECE placement exams, where aptitude questions and answers related to inductors frequently appear. These questions often test concepts like inductive reactance, energy storage, mutual inductance, and RL circuit behavior. Mastering these fundamentals helps in analyzing real-world circuit performance. This section provides electronics questions with answers and explanations on inductors, enabling learners to strengthen their concepts and prepare effectively for competitive exams. Practice these aptitude questions with detailed solutions to enhance your technical understanding and speed.
Inductors
81. A magnet consisting of a coil of wire wound around a soft iron or steel core is called an electromagnet.
- TRUE
- FALSE
83. Five time constants are required for current in an inductor to reach a maximum value.
- TRUE
- FALSE
84. The quality factor of an inductor is the ratio of inductive reactance to the winding resistance of the coil.
- TRUE
- FALSE
85. In a dc circuit, the only conversion of energy to heat is in the inductance of the coil itself.
- TRUE
- FALSE
87. Lenz's law states that the current induced in a circuit due to a change in the magnetic field is so directed as to oppose the change in flux or to exert a mechanical force opposing the motion.
- TRUE
- FALSE
89. Maximum power will transfer across a transformer when the primary impedance equals the secondary impedance.
- TRUE
- FALSE
90. Increasing the inductance value in an ac inductive circuit will lower the circuit current.
- TRUE
- FALSE