1.a. A tachometer generator used to measure the speed of rotation of IC engines, has an ideal rating of 6V per 1000 rpm, a range of 0 - 4000 rpm and an accuracy of +/=0.4% of full scale. If the output of the tachometer generator is 18V , what is the ideal value of the speed? What are the minimum and maximum possible values of the speed?

1.b. Write short notes on:

i) MEMS

ii) Nano senser

1.c. Draw a diagram of gear pump. Explain its construction and working principle.

2.a. As shown in Fig I, a radio tuner is connected to the tuning knob through a 3:1 gear mesh. If the knob is turned 70 degree , how many degrees does the tuner rotate?

2.b. Explain the working of gyroscope with a suitable sketch.

2.c. Explain the following in details:

i) Relief valve

ii) Centrifugal pump

3.a. Explain the following in detail:

i) Air filter and water trap

ii) Refrigerated dryer

3.b. Explain with a suitable sketch, how lubricator is used for lubrication.

3.c. A pneumatic cylinder is required to move a 1000N load 150 mm in 0.5s. What is the output power?

4.a. Write short notes on the following:

i)Double acting cylinder

ii) Air receiver

4.b. Compare hydraulic and pneumatic systems in mechatronics applications.

4.c. Explain the working of diaphargm compressor

5.a. What is relay? How is it useful in indirect switching of high voltage circuit?

5.b. Explain power cables and signal cables. Where are they used in Mechatronics automation systems?

6.a. Explain the working of solenoid.

6.b. Draw the symbol and explain the working of

i) 4/2 directional contro valve (DCV)

ii) 3/2 way spool valve.

7.a. Discuss the necessity of autopilot system for boat. Explain its construction and working with a suitable sketch.

7.b. Write a short note on CNC machine.

8.a. Develop an engine management system. Explain its construction , working and application with a suitable sketch.

8.b. Explain anti-locking braking system (ABS) technology. What are its major components?