cameroon gce intermediate level electrical machines 2
cameroon gce intermediate level electrical machines 2
SECTION A – MAGNETISM AND ELECTROMAGNETISM
1.
a) State the laws of electromagnetic induction (3marks)
b) Inductors are used when their inductive properties are required in a circuit. Give the symbol of an
inductor with;
i. iron – core (2marks)
ii. air – core (2marks)
c) Differentiate between self-induced emf and mutually induced emf (3marks)
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2. A conductor of useful length 0.95m cuts a magnetic field of 0.45T at a speed of 3m/s. Calculate the;
a) emf induced (5marks)
b) flux cut in the coil if the cross sectional area of the conductor is 3mm2 (5marks
Dassi charlie
June 18, 2021
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