IT-222 Board Question Papers 2017 DAE Instrumentation

 IT-222 Board Question Papers 2017 DAE Instrumentation Technology.

IT-222 Question Paper

DAE/IIA-2017

IT-222

Part B

Time: 2:30Min                                       SECTION-I                                                 Marks: 80                              

Q.2 Write shorts answers to any Twenty-five (25) of the following questions.

25×2=50             

IT 222 Past Paper

• 1.      Define secondary instruments and integrating instruments.
• 2.      Write two advantages and two disadvantages of the spring control method.
• 3.      Define parallel error.

• 4.      Write four properties of bearing materials.
• 5.      Write two functions of controlling torque.
• 6.      Write four disadvantages of moving iron instruments.
• 7.      Write four disadvantages of thermocouple instruments.
• 8.      Make a connection diagram of the dynamometer-type instrument as a wattmeter.
• 9.      Define rectifier-type instruments.
• 10.   Write four properties of shunt materials.
• 11.   Find the internal resistance of an ampere meter. If 35mA current through it causes a voltage drop of 80mA.
• 12.   Define ohm meter and write the names of its types.
• 13.   Make circuit diagram of shunt type ohmmeter.
• 14.   Write uses of Megger.
• 15.   Make a diagram of the Wheatstone bridge and label its parts.
• 16.   Make an internal circuit diagram of a single-phase induction type energy meter.
• 17.   Write the working principle of thermal bimetal type MDI.
• 18.   Define current transformer.
• 19.   Write the formula of ratio error for a C.T.
• 20.   Write two uses of P.T.
• 21.   Define power factor meter.
• 22.   Write the working principle of the electrical resonance frequency meter.
• 23.   Define Synchroscope.
• 24.   Write any four disadvantages of thermocouple type pyrometer.
• 25.   Write four advantages of a photoelectric pick-up tachometer.
• 26.   Define tachometer.
• 27.   Make a block diagram of digital instruments to show their working principle.
• 28.   Write the basic working principle of digital voltmeter.
• 29.   Write four advantages of a balanced bridge transistor voltmeter.
• 30.   Make a block diagram of a dual-trace oscilloscope.
• 31.   What is meant by displaying instruments?
• 32.    Define deflecting force of indicating instruments.
• 33.   Write the name of three important parts of moving iron repulsion-type instruments.
• 34.   Enlist four common errors of ampere meters and voltmeters.
• 35.   Write the belavier and earth overlap test.
• 36.   Write disadvantages of the resistant pyrometer.
• 37.   Write the name of some important internal parts of an oscilloscope.

SECTION-II

NOTE: Attempt any three (3) Questions.                                                               3×10=30

 Q.2: (a) Define absolute instruments.

         (b) Write seven difference b/w absolute and secondary instruments.

 Q.3: (a) What is the purpose of damping torque in indicating instruments?

         (b) Explain in detail different types of damping methods.

 Q.4: Write advantages and disadvantages of PMMC instruments.

 Q.5: Write the name of different types of an oscilloscope and explain the working of storage type    

Oscilloscope.

Q.6: Define energy meter. Write the names and functions of its different parts.

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