Math Laws Pt.25

Vickers, Knoop and Brinell are all:

• hardness test

• magnetic const

• nobel winners in metallurgy

• thermo const

Dichlorodifluoromethane is:

• Freon 22

• Freon 21

• Butane

• Freon 12

SI system for power:

• joule

• pascal

• newton

• watt

In electrical circuits, the potential difference across terminal of circuit elements is called:

• voltage

• current measure in amperes

• resistance measured in ohms

• power in watts

A zener diode can be used in a circuit to provide a stable reference for

• current

• voltage

• impedance

• resistance

Basic unit of length of the SI system

• meter

• decimeter

• millimeter

• centimeter

In mounting a machine, it should be leveled by driving wedges between the machine base and concrete foundation and with aid of:

• a horse and water

• a tri-square

• a steel rule

• a sprint level

Any influence capable of producing a change in the motion of an object is called:

• force

• acceleration

• vector

• velocity

In an AC circuit, the opposition to current flow due to combination of resistance and reactance is called:

• capacitance

• impedence

• resistance

• inductive reactance

The unit prefix nano is opposite to:

• mega

• giga

• tera

• exa