6. Tests for the topic “Fundamentals of the theory of stress and strain”

Lecture

No.	Question	Response Time, sec
one	What is called a stress state at a point?	thirty
	1. Intensity of internal efforts.
	2. The set of stresses drawn through the point.
	3. The set of deformations at a point in the body.
	4. The set of movements at a point in the body.
2	What sites are called main sites?	thirty
	1. The sites on which the greatest normal and greatest shear stresses act.
	2. Areas with extreme tangential stresses.
	3. Plots on which extreme normal stresses act.
	4. Plots with the highest tangential stresses and the lowest normal stresses.
3	Which type of stress does not exist?
	1. Volumetric stress state.
	2. Flat stress state.
	3. Plane-parallel stress state.
	4. Linear stress state.
4	Which of the types of stress state shown in the figure is linear?	thirty
	First 1) -?
	Second 2) -?
	Third 3) -?
5	Which of the types of stress state shown in the figure is flat?	thirty
	First 1) -?
	Second 2) -?
	Third 3) -?
6	Which of the types of stress state shown in the figure is three-dimensional?	thirty
	First 1) -?
	Second 2) -?
	Third 3) -?
7	What formulas determine the normal and tangential stresses in a linear stress state?	60
	;
	;
	;
	;
8	Determine the normal stresses (in MPa) in the inclined area of the rod shown in the figure ( )	90
nine	Determine the tangential stresses (in MPa) in the inclined area of the rod shown in the figure ( )	90
10	Based on what law (div. figure)?	thirty
	1. The Boyle-Marriott Act.
	2. Hooke's Law.
	3. The law of conservation of energy.
	3. The law of paired tangential stresses.
eleven	What formulas are used to determine normal and shear stresses in a plane stress state?	60




12	What formula should be used to determine the principal stresses in a plane stress state?	60




thirteen	How to determine the position of the main sites in a plane stress state. Which of the formulas should be used?	40
	;
	;
	;
	;
14	What can be determined using the formula?	40
	1. The position of the net shear sites.
	2. The position of the pure bend sites.
	3. The position of the sites for extreme tangential stresses.
	4. The position of the main sites.
fifteen	What is defined using the expression: =?	40
	1. Extreme deformations.
	2. Extreme normal stresses.
	3. Extreme displacement.
	4. Extreme tangential stresses.
sixteen	What are the sites shown in the figure:	40
	1. Pads of a clean bend.
	2. The main sites.
	3. Pure shear sites.
	4. Launching sites.
17	Determine the magnitude of the tangential stresses in the inclined at an angle of 45 about the areas shown in the figure:	60
eighteen	Determine the normal voltage in the inclined platform shown in the figure:	180
nineteen	Determine the maximum normal voltage acting on the site shown in the figure:	180
twenty	Yak is the expression below that describes a volumetric stress state:	thirty
	1.Ball stress tensor.
	2. The stress tensor.
	3. The strain tensor.
	4. The deviator of the stress tensor.
21	What is the name of the following expression describing the volumetric stress state:	thirty
	1.Ball stress tensor.
	2. The stress tensor.
	3. The strain tensor.
	4. The deviator of the stress tensor.
22	What is the name of the following expression describing the volumetric stress state:	340
	1.Ball stress tensor.
	2. The stress tensor.
	3. The strain tensor.
	4. The deviator of the stress tensor.
23	What characterizes the ball tensor?	thirty
	Change the volume of an item.
	Change the shape of an element.
24	What characterizes the stress tensor deviator?	thirty
	Change the volume of an element.
	Change the shape of an element.
25	What does the expression mean: =?	40
	Octahedral normal stresses.
	Stress intensity.
	Strain rate.
	Octahedral tangential stresses.
26	What is called a deformed state at a point?	thirty
	Intensity of internal efforts.
	The set of stresses drawn through a point.
	The set of deformations at a point in the body.
	The set of movements at a point in the body.
27	Which of the laws is a collection of expressions:	thirty
	Ohm's law.
	Hooke's voluminous law.
	Hooke's generalized law.
	Law of energy conservation.
28	Which of the formulas determines the relative change in the volume of an element?	thirty




29th	What formula can be used to express the relative change in the volume of an element through principal stresses?	thirty




nine	Which of the laws is described by expression?	thirty
	The law of gravity.
	Hooke's generalized law.
	Hooke's voluminous law.
	Pascal's Law.
nine	At what limits can the Poisson's ratio vary?	thirty




nine	What does the expression mean:	thirty
	1. Young's modulus.
	2. The shear modulus.
	3. The bulk modulus.
	4. Volumetric shear modulus.