All coil cores are made of iron.%! – McqOptions

MCQOPTIONS

1.	All coil cores are made of iron.%!
A.	True
B.	False
Answer» C.

Discussion

No Comment Found

Related MCQs

Inductance is the property of an inductor that produces an opposition to any change in current.
An induced voltage is produced as a result of a dc voltage.
Inductors add in parallel.
The following coils are in parallel: 75 µH, 40 µH, 25 µH, and 15 µH. The total inductance is approximately
When the current through an inductor is cut in half, the amount of energy stored in the electromagnetic field
When the current through an inductor decreases, the amount of energy stored in the electromagnetic field
An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is
Two inductors, L1 and L2, are in parallel. L1 has a value of 25 µH and L2 a value of 50 µH. The parallel combination is in series with L3, a 20 µH coil. The entire combination is across an ac source of 60 Vrms at 300 kHz. The total rms current is
The permeability of a core material is an indication of the ability of the material to establish a magnetic field.
The inductance of an iron-core coil decreases if