18 Questions
What is the purpose of the strain measurement setup described in the manual?
To study the utilization of a cantilever beam as a force measurement device.
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.
Why is a full bridge configuration of strain gauges preferred over a single strain gauge system?
It provides x4 higher sensitivity.
How is an offset voltage corrected in the described setup?
By zero set control.
What type of potential is used to excite the measuring bridge in the setup?
DC potential
Why is automatic temperature compensation achieved in the measuring bridge setup?
As all gauges are located at the same beam section.
What is the purpose of adjusting the zero adjustment pot?
To set the initial output display to 0 with no load applied
What should be the relationship between the applied force and the measured strain, according to the instructions?
Linear
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
What is the recommended procedure for verifying the strain gauge calibration?
All of the above
What is the purpose of measuring the analog voltage (Van) at the output?
To calculate the applied force from the measured strain
What is the expected shape of the curve when plotting strain against applied force?
Linear
What is the primary application of a strain gauge cantilever arrangement?
To measure the components of forces acting on a specimen
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
What is the relationship between the bridge output voltage (AV) and the strain (ε) in a strain gauge bridge?
AV = (Vr * GF * ε) / 2
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
What is the purpose of the signal conditioning circuit mentioned in the text?
To amplify the bridge output voltage
What is the relationship between the applied force and the bridge output voltage (AV)?
AV is directly proportional to the applied force
This quiz covers the user manual for measuring force using strain cantilever, focusing on the study of strain measurement using a cantilever beam. The setup includes a cantilever beam, strain gauges, signal conditioner circuit, and a digital display calibrated for weight measurement.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
