Automobile Mechanical Measurements — Winter 2017

What do you understand by measurement? Explain different methods of measurement.

Explain the terms Limits, fits and tolerances with examples in brief.

Explain slip gauges with ringing process.

Which are the different sources of errors in measurement? Explain the terms precision and accuracy related to measurement.

Describe with neat sketch construction and working principle of Vernier height gauge.

List different types of comparators and explain the working of Sigma comparator.

Explain the following methods for surface finish:

Ten point height method ii) Peak to valley height method iii) Average roughness method

Describe with neat sketch construction and working of micrometer. Explain the method to take the readings.

Explain the construction and working of LVDT with its advantages and disadvantages.

Give the classification of clinometers. Explain any one of them with a neat sketch.

Explain the following terminology for gears:

Profile checking ii) Backlash checking iii) Checking of composite errors

Explain the working principle of thermocouple with its advantages and disadvantages.

Write a short note on diaphragm pressure gauge.

Write a short note on hot wire anemometer.

Explain in brief Pitot gauge and Ionization gauge.

Explain the principle and types of electrical strain gauges.

Discuss in brief peizo electric and seismic accelerometer.