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LMS SUBSTATION IV YEAR 2 LESSON 11
REVIEW 2026 ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
The ability of a current-carrying conductor, coil, or circuit to induce a voltage into itself or adjacent circuits is called?. a. coupling b. inductance c. reactance d. transference - correct answer-b. inductance The letter? is used in calculations to represent inductance. a. I b. L c. M d. N - correct answer-b. L A transformer operates under the principle of?. a. coil interaction b. electrical coupling c. magnetic transfer d. mutual induction - correct answer-d. mutual induction
The inductance of a coil is directly related to the number of turns of wire that make up the coil. True False - correct answer-True The flux lines that do not link to all the other coils do not contribute to the total inductance, and are called? flux. a. disconnected b. leakage c. scattered d. wasted - correct answer-b. leakage The ability of a material to focus, or concentrate, magnetic lines of force is called magnetic?. a. absorption b. amplification c. constriction d. permeability - correct answer-d. permeability
The ability of a moving or changing magnetic field to induce a voltage into a conductor is called?. a. conduction b. coupling c. inductance d. reaction - correct answer-c. inductance When a conductor that is cutting through a magnetic field changes direction, the? of the induced voltage will be reversed. a. frequency b. intensity c. polarity d. velocity - correct answer-c. polarity If the current flowing through a conductor decreases, the magnetic field around the conductor will increase. True False - correct answer-False Another term for counter EMF is? EMF. a. back
b. opposing c. residual d. reverse - correct answer-a. back Lenz's Law states, "An induced voltage or current opposes the motion that created the induced voltage or current." Select one: True False - correct answer-True The induced voltage is? out of phase with the applied voltage. a. 0° b. 90° c. 180° d. 360° - correct answer-c. 180° Maximum EMF is induced when a conductor cuts a magnetic field at?. a. 0° b. 90° and 270° c. 180°
When a coil induces a voltage into itself, it is known as? inductance. a. auto b. back c. counter d. self - correct answer-d. self The ability of one coil to induce a voltage into another coil is called? induction. a. common b. magnetic c. mutual d. shared - correct answer-c. mutual A coil of wire wrapped around a core is called a(n)?. a. capacitor b. inductor c. magneto d. transducer - correct answer-b. inductor For a voltage to be induced in a conductor, there must be relative motion between the conductor and a magnetic field.
True False - correct answer-True
