FREE NCEES Engineering General Questions and Answers

Question 1

What is the name for the stress to strain ratio that is lower than the proportional limit?

Accepted Answer

Young’s modulus

Answer

Young's modulus, also known as the modulus of elasticity, is a material property that quantifies its stiffness. It is defined as the ratio of stress (force per unit area) to strain (proportional deformation) within the elastic region, specifically below the material's proportional limit. This value indicates how much a material will deform elastically under a given load.

Question 2

What angle, for the following frame depicted most approximately, would guarantee that the frame is in equilibrium?

Accepted Answer

33.7°

Answer

To ensure a frame is in equilibrium, the sum of all forces acting on it in both horizontal and vertical directions must be zero, and the sum of all moments about any point must also be zero. Without the specific frame diagram and the forces applied, a detailed calculation cannot be performed. However, 33.7° is a common angle that arises in structural mechanics problems when specific force and geometric configurations are required for static equilibrium.

Question 3

The same thing as 18,000 watts is

Accepted Answer

18 µW

Answer

The prefix 'kilo' (k) denotes 10^3, so 18,000 watts is equivalent to 18 kilowatts (18 kW). The prefix 'micro' (µ) denotes 10^-6. Therefore, 18 µW (microwatts) is 18 x 10^-6 watts, which is a significantly smaller value than 18,000 watts. Based on standard metric prefixes, 18,000 watts is correctly expressed as 18 kW, not 18 µW.

Question 4

The term for electrons in the outer orbit is

Accepted Answer

valences

Answer

Valence electrons are the electrons located in the outermost electron shell of an atom. These electrons are critically important because they determine an atom's chemical properties and its ability to form chemical bonds with other atoms. The number of valence electrons dictates an element's reactivity and how it will interact in chemical reactions.

Question 5

A two-terminal variable resistor is what a potentiometer is.

Accepted Answer

False

Answer

A potentiometer is fundamentally a three-terminal variable resistor. It consists of a resistive track with two fixed end terminals and a third terminal connected to a movable sliding contact (wiper). While it can be configured as a two-terminal variable resistor (rheostat) by using only one end terminal and the wiper, its inherent design and full functionality involve all three terminals.

NCEES National Council of Examiners for Engineering and Surveying Practice Practice Test

NCEES National Council of Examiners for Engineering and Surveying Practice Practice Test

FREE NCEES Engineering General Questions and Answers