Measurement of Force by Strain Cantilever User's Manual

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What is the purpose of the strain measurement setup described in the manual?

To examine the effect of temperature on strain gauges.

To test the electric conductivity of brass strips.

To study the utilization of a cantilever beam as a force measurement device. (correct)

To investigate the properties of different metals used in cantilever beams.

In the system described, which configuration of strain gauges is used to constitute the four active arms of a measuring bridge?

RG1 and RG3 in tension, RG2 and RG4 in compression. (correct)

RG1 and RG2 in tension, RG3 and RG4 in compression.

RG1 and RG4 in tension, RG2 and RG3 in compression.

RG1 and RG2 in compression, RG3 and RG4 in tension.

Why is a full bridge configuration of strain gauges preferred over a single strain gauge system?

It requires less calibration.

It is more resistant to temperature changes.

It provides x4 higher sensitivity. (correct)

It is cheaper to implement.

How is an offset voltage corrected in the described setup?

By zero set control. Signup and view all the answers

What type of potential is used to excite the measuring bridge in the setup?

DC potential Signup and view all the answers

Why is automatic temperature compensation achieved in the measuring bridge setup?

As all gauges are located at the same beam section. Signup and view all the answers

What is the purpose of adjusting the zero adjustment pot?

To set the initial output display to 0 with no load applied Signup and view all the answers

What should be the relationship between the applied force and the measured strain, according to the instructions?

Linear Signup and view all the answers

What is the purpose of measuring the reference voltage (Vr) across the ground and REF socket?

To determine the gain factor (GF) of the amplifier circuit Signup and view all the answers

What is the recommended procedure for verifying the strain gauge calibration?

All of the above Signup and view all the answers

What is the purpose of measuring the analog voltage (Van) at the output?

To calculate the applied force from the measured strain Signup and view all the answers

What is the expected shape of the curve when plotting strain against applied force?

Linear Signup and view all the answers

What is the primary application of a strain gauge cantilever arrangement?

To measure the components of forces acting on a specimen Signup and view all the answers

If a load is applied to a specimen in the direction 'f', what happens to the strain gauges?

Gauges 1 and 2 are stretched, while 3 and 4 are compressed Signup and view all the answers

What is the relationship between the bridge output voltage (AV) and the strain (ε) in a strain gauge bridge?

AV = (Vr * GF * ε) / 2 Signup and view all the answers

What does the term 'gauge factor' (GF) represent in the strain gauge bridge equation?

The ratio of the change in resistance to the change in strain Signup and view all the answers

What is the purpose of the signal conditioning circuit mentioned in the text?

To amplify the bridge output voltage Signup and view all the answers

What is the relationship between the applied force and the bridge output voltage (AV)?

AV is directly proportional to the applied force Signup and view all the answers

Measurement of Force by Strain Cantilever User's Manual

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