Advanced Electrical Concepts Class 4 Quiz 1 (24/30)

Convert 40 HP to KW

29.840

Calculate the flux (�) of a magnet with a flux density of 0.1875 in an area of 0.0064
square meters. Answers are in weber

0.0012

Find the intensity (H) of a magnet with field with an mmf of 1500 ampere-turns
(At) and a core length of 0.08 meters. All answers in A�t/m

18750

Calculate the area (A) of a magnet with a flux of 400 microwebers and a flux density of
0.80 Tesla. Answers are in meters squared

...

Calculate the magnetomotive force of a solenoid with 3500 turns of wire and a current
of 13 amps. Answers are in mmf

45500

A motor uses 7.46 KW of electricity. What value in HP does this represent

...

A 40 hp motor drives a generator that delivers 55.5 Amps at 440 volts. Find the
efficiency of the generator

...

Calculate the magnetomotive force (mmf) of a solenoid with 10,000 turns of wire with
a current of 3 amps Answers are in mmf

30,000

The two variables that affect the strength of a coils electromagnetic field are number
of turns and amount of ____

current

A 40 hp motor drives a generator that delivers 80% efficency. Find the
output of the generator in HP

...

Find the intensity (H) of an electromagnet with mmf 4000 ampere-turns
and a core length of 0.050 meters. All answers in A�t/m

80,000

Calculate the flux density (B) of a magnet with a flux of 140 microwebers through an
area of 0.003 square meters Answers are in teslas (T)

...

Find the intensity (H) of a solenoid with 10,000 turns of wire with
a current of 3 amps and a core length of 0.48 meters. All answers in A�t/m

62,500

A coil has an mmf of 300 and a reluctance of 2,000,000.00. Calculate the flux in micro webers

150

Find the intensity (H) of a solenoid with 900 turns of wire with
a current of 8 amps and a core length of 0.48 meters. All answers in A�t/m

15,000

Calculate the magnetomotive force of a solenoid with 1200 turns of wire and a current
of 50 amps Answers are in mmf

60,000

A coil has an mmf of 20 and a flux of 1200 micro webers. Calculate the reluctance

16,666.666

Calculate the current of a solenoid with 800 turns of wire and a magnetomotive force
of 45. Answers are in amps

0.05625

Convert 6000 watts to HP

8.042

What is the term used to describe the ends of a magnet?

poles

Convert 9KW to HP

12.064

Find the electrical horsepower of a generator that delivers 50 amps at 240 volts

...

The amount of ____ voltage can be determined by using Faradays Law

induced

ach magnetic domain has its own north and south _____

poles

A material's tendency to oppose the passage of a magnetic field is called

reluctance

Convert 12 HP to watts

8,952

Lenz law is used to determine the direction of a ____ voltage or current

induced

Calculate the flux density (B) of a magnet with a flux of 100 microwebers through an
area of 0.002 square meters. Answers are in teslas (T)

0.05

Calculate the flux density (B) of a magnet with a flux of 850 microwebers through an
area of 0.005 square meters. Answers are in teslas (T)

0.17

A coil has an intensity (H) of 25 and a relative permeability (Ur)of 20. Calculate B in teslas

0.00063