MATH 25

In how many years will $1,200 yield an interest of $180 at 3% simple interest? _____

• 7years

• 5 years

• 9 years

• 10 years

Jim invested $4,000 in a bond at a yearly rate of 4.5%. He earned $540 in interest. How long was the money invested? ____

• 2 years

• 13 years

• 3 years

• 15 years

A 10kiloohm resistor and an unknown resistor R are connected in series to a 30V supply. If

the voltage across the 10k resistor is 20V, the total power dissipation of the circuit

will be:

• 60mW

• 90mW

• 40mW

• 20mW

To pass the licensure examination, a candidate for Electronics Engineer or

Electronics Technician must obtain a passing rating of ________ in each subject

given during the examination.

• 70%

• 60%

• 40%

• 20%

Find the distance from the point (2,3) to the line 3x + 4y + 9 =0

• 5

• 5.4

• 6

• 6.5

If a transformer has a turns ratio of 1:3, what is the current ratio?

• 1:3

• 9:1

• 3:1

• 1:9

The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 km in

4 hours, then the speed of the first train is:

• 70 km/hr

• 57.15 km/hr

• 43.26 km/hr

• 87.5 km/hr

A copper wire has a diameter of 0.005 inch. Find its area in circular mil.

• 25 cmil

• 7 cmil

• 50 cmil

• 36 cmil

The sides of a right triangle are 8 , 15 and 17 units. If each side is doubled, how

many square units will be the area of the new triangle?

• 240

• 120

• 360

• 480

When maximum power is transferred from a source to a load, the efficiency is:

• 100%

• 75%

• 50%

• 25%