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Structures and Properties of Materials MCE132 Measuring Devices Quiz

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Questions and Answers

What is the main aim of using measuring devices in the context of this text?

To measure the temperature of materials
To determine the load-deformation relationship (correct)
To calculate the electrical properties of materials
To analyze the chemical composition of materials

Which device is used to apply the load on the test specimen and measure this load with the required accuracy?

Testing Machines (correct)
Strain Gauges
LVDT
Dial Gauges

What is the primary function of a dial gauge in the context of this text?

To measure the deflection or deformation of different elements (correct)
To measure the temperature of materials
To apply the load on the test specimen
To calculate the electrical properties of materials

How is a dial gauge typically attached in the context described in the text?

Attached at two points between which the relative movement is measured (C) Signup and view all the answers

What is the function of most dial gauges as described in the text?

To have two scales for measurement (D) Signup and view all the answers

What type of device is used to measure the load with the required accuracy in this context?

Load Cells (B) Signup and view all the answers

What is the function of an LVDT (Linear Variable Differential Transducer) in laboratory testing devices?

Measuring the small movements or deformations of test specimens (B) Signup and view all the answers

What is the primary purpose of a strain gauge in laboratory testing devices?

Measuring the small deformations within a certain gauge length (D) Signup and view all the answers

What does the output voltage from an LVDT depend on?

The value of the movement (i.e. deformation) (D) Signup and view all the answers

What is the relationship between the electric resistance of a strain gauge and the deformation occurred in the test specimen?

$\epsilon$ (C) Signup and view all the answers

Which laboratory testing device is known for its high accuracy and precision?

Strain Gauge (A) Signup and view all the answers

What are the components of an LVDT (Linear Variable Differential Transducer)?

Non-magnetic shell and two primary electric coils (C) Signup and view all the answers

What is the function of an extensometer in laboratory testing devices?

Measuring the axial deformations of axially loaded elements (B) Signup and view all the answers

What happens to the electrical resistance of a strain gauge as it is strained?

$\epsilon$ increases linearly (A) Signup and view all the answers

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