ASVAB Pre-Assessment

Under natural conditions, large quantities of organic matter decay after each year’s plant growth has been completed. As a result of such conditions

soil maintain their fertility.

What temperature is shown on Kelvin thermometer when a centigrade thermometer reads 0

273

of the following, the lightest known on earth was is

Hydrogen

of the following gases in the air, the most plentiful is

nitrogen

Which alcohol would be present in alcoholic beverages?

Grain alcohol

A new drug for treatment of tuberculosis was being tested in a hospital. Patients in group A actually received doses of the new drug; those in group B were given only sugar pills. Group B represents a(n)

Experimental control

Of the following, the simple machine that provides a mechanical advantage of 1 is the

Single fixed pulley

Radium is stored in lead containers because

The lead absorbs the harmful radiation

The time that it takes for the earth to rotate 45º is

3 hours

Which gas is exhaled by mammals?

carbon dioxide

The rate of doing work is known as

power

What is the name of the negative particle that circles the nucleus of the atom

electrons

Which of he following rocks can be dissolved with weak acid?

Limestone

The tank, T, is to be raised as shown, in the above figure, by attaching the pull rope to a truck. If the tank is to be raised 10 feet, the truck will have to move

30 feet

The tank, T, is to be raised as shown, in the above figure, by attaching the pull rope to a truck. If the tank is to be raised 10 feet, the truck will have to move

32 gallons per minute

Assume that the color of the flame from a gas stove is bright yellow. To correct this, you should

Open the air flap

The core of an electromagnetic is usually

Iron

If voltage is represented by V, current by I, and resistance by R, then the one of the following that correctly states Ohm's Law is

V=IR

The device used to change AC to DC is a

Rectifier

The device that is often used to change the voltage in alternating current circuits is the

Transformer

What does LED stand for?

Light Emitting Diode

To determine directly whether finished wire installations possess resistance between conductors and ground, use

A megger

The electrical current most likely used in a blow dryer is

Alternating current

Microfarads are units of measurement usually associated with

Capacitors

Which of the following circuit components modulate current direction and voltage?

Diodes and transistors

Which of the following colors is used for a live wire?

Black

Which of the following statements is NOT true regarding electronic devices?

They convert electrical energy into other forms of energy

A transformer that increases the voltage from the primary winding to the secondary winding is called a(n)

Step up transformer

What structural property of the semiconductor silicon makes it important to electrical applications?

It’s crystal lattice structure