ASVAB Electronics Information Test

Question 1

What is the unit of electrical capacitance?

Accepted Answer

Farad

Answer

Capacitance is measured in farads (F), named after Michael Faraday.

Question 2

In a parallel circuit with three 6-ohm resistors, what is the total resistance?

Accepted Answer

2 ohms

Answer

In parallel, total resistance = 1/(1/6+1/6+1/6) = 6/3 = 2 ohms.

Question 3

What does a diode primarily do in a circuit?

Accepted Answer

Allows current to flow in only one direction

Answer

A diode is a semiconductor device that permits current to flow in one direction only.

Question 4

Which type of transformer steps voltage up from primary to secondary coil?

Accepted Answer

Step-up transformer

Answer

A step-up transformer has more turns on the secondary coil than the primary, increasing voltage.

Question 5

What is the color code for a resistor with bands: Red, Red, Brown, Gold?

Accepted Answer

220 ohms ±5%

Answer

Red=2, Red=2, Brown=×10 multiplier, Gold=±5% tolerance gives 220 ohms ±5%.

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