Polytechnic Engineering Fundamentals

Question 1

What is Ohm's Law?

Accepted Answer

V = IR

Answer

V = I/R

Answer

V = I + R

Answer

V = I²R

Question 2

Which of the following best describes stress in engineering mechanics?

Accepted Answer

Force per unit area

Answer

Force times displacement

Answer

Mass times acceleration

Answer

Energy per unit volume

Question 3

What is Newton's Second Law of Motion?

Accepted Answer

F = ma

Answer

F = mv

Answer

F = m/a

Answer

F = m + a

Question 4

What is the unit of electrical resistance?

Accepted Answer

Ohm (Ω)

Answer

Volt (V)

Answer

Ampere (A)

Answer

Watt (W)

Question 5

What does the Young's Modulus (E) measure?

Accepted Answer

Stiffness of a material

Answer

Hardness of a material

Answer

Ductility of a material

Answer

Thermal conductivity

Question 6

In a series circuit, how is total resistance calculated?

Accepted Answer

R_total = R1 + R2 + R3 + ...

Answer

1/R_total = 1/R1 + 1/R2 + ...

Answer

R_total = R1 × R2 × R3

Answer

R_total = R1 - R2