What is the total inductance of a 5 H and a 100 mH coil connected in parallel? 4

CuriousTab

Correct Answer

98.0 mH

1. What is electromagnetism?
Options
A. the magnetic field generated around a conductor when a current passes through it
B. the magnetic field generated in a conductor by an external voltage
C. the voltage caused by a magnetic field in a conductor
D. the current generated by an external magnetic field

Correct Answer: the magnetic field generated around a conductor when a current passes through it

2. A change of one ampere per second in an inductor that induces a voltage of one volt is considered as which unit value?
Options
A. a lenz
B. an ohm
C. a farad
D. a henry

Correct Answer: a henry

3. If the primary of a 4:1 turns transformer dissipates 5 W, what is the secondary power?
Options
A. 5.0 W
B. 1.25 pW
C. 9.5 W
D. 20.0 mW

Correct Answer: 5.0 W

4. The time required for one weber of flux to cut a conductor and produce one volt is:
Options
A. one revolution
B. one second
C. one millisecond
D. four revolutions

Correct Answer: one second

5. The time difference, or lag, between flux density and magnetizing force is known as:
Options
A. eddy current
B. magnetic saturation
C. hysteresis
D. coercivity

Correct Answer: hysteresis

Correct Answer: a magnetic field cutting a conductor

7. Providing a constant output regardless of ac input or load resistance changes is the function of a:
Options
A. transformer
B. filter
C. regulator
D. rectifier

Correct Answer: regulator