Free Printable Electrical machines introduction quiz

1.

which symbol is used to represent electrical flux?

a)

$\phi$

b)

H

c)

B

d)

A

2.

how will you find the magnetic field strength?

a)

$B=\phi\div A$

b)

$E=\frac{\text{d}\phi}{\text{dt}}$

c)

$H=\frac{MMF}{L}$

d)

$MMM=NI$

3.

how will you find the magnetic flux density?

a)

$B=\phi\div A$

b)

$E=\frac{\text{d}\phi}{\text{dt}}$

c)

$H=\frac{MMF}{L}$

d)

$MMM=NI$

4.

write the formula for finding emf induced in the coil?

a)

$B=\phi\div A$

b)

$E=\frac{\text{d}\phi}{\text{dt}}$

c)

$H=\frac{MMF}{L}$

d)

$MMM=NI$

5.

write the unit of magnetic flux?

a)

$\frac{wb}{m^2}$

b)

wb

c)

AT

d)

AT/m

6.

write the unit of magnetic flux density?

a)

$\frac{wb}{m^2}$

b)

wb

c)

AT

d)

AT/m

7.

write the unit of magnetic field intensity?

a)

$\frac{wb}{m^2}$

b)

wb

c)

AT

d)

AT/m

8.

write the unit of magneto motive force (mmf)?

a)

$\frac{wb}{m^2}$

b)

wb

c)

AT

d)

AT/m

9.

write the formula for finding mmf?

a)

$B=\phi\div A$

b)

$E=\frac{\text{d}\phi}{\text{dt}}$

c)

$H=\frac{MMF}{L}$

d)

$mmf=NI$

10.

According to Lenz law write the formula for finding emf induced in the coil?

a)

$B=\phi\div A$

b)

$E=-\frac{\text{d}\phi}{\text{dt}}$

c)

$H=\frac{MMF}{L}$

d)

$MMM=NI$

Electrical machines introduction quiz

Total questions: 10

Worksheet time: 5mins

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