# Important Questions for BE Instrumentation Engineering Semester 1 (FE First Year) - University of Mumbai

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Distinguish between thermoplastic and thermosetting resins. ?

Appears in 3 question papers
Chapter: [2] Polymers
Concept: Thermoplastic Plastic

A quartz crystal of thickness 1.5 mm vibrating with resonance. Calculate it’s fundamental frequency if the Young’s modulus of quartz crystal is 7.9×1010N/m2 and density is 2650 kg/m3

Appears in 3 question papers
Chapter: [1] Crystal Structure
Concept: Study of characteristics of unit cell of Diamond, ZnS, NaCl and HCP;

How electricity is generated by using wind energy?

Appears in 3 question papers
Chapter: [5] Renewable Sources of Energy
Concept: Principle and Working with Wind Energy

What are limitations of conventional sources of energy?

Appears in 3 question papers
Chapter: [5] Renewable Sources of Energy
Concept: Importance of Renewable Sources of Energy

Explain concept of carbon credit.

Appears in 3 question papers
Chapter: [6] Technological Advances to Overcome Environmental Problems
Concept: Carbon Credit: Introduction and General Concept

Calculate the quantity of the pure lime and soda required for softening of 1,00,000 litres of water containing the following impurities in ppm. The purity of lime is 70% and soda is BS% Ca(HCO3) = 30.2 , Mg(HCO3) = 20.8 ,CaCI2 = 28.1 ,MgCl2 = 8.78, CaSO= 35, MgSO4 = 6.7 .

Appears in 2 question papers
Chapter: [1] Water
Concept: Softening of water by Hot and Cold lime Soda method and numerical problems

Discuss the treatment of water using bleaching powder

Appears in 2 question papers
Chapter: [1] Water
Concept: Drinking Water Or Municipal Water

Calculate the total hardness in ppm in given water sample.
: 50ml of standard hard water , containing 1mg pure CaCO3 per ml consumed 20ml EDTA solution.
: 50ml of water sample consumed 30ml EDTA solution using EBT indicator.

Appears in 2 question papers
Chapter: [1] Water
Concept: Hardness of Water

Distinguish between BOD and COD.

Appears in 2 question papers
Chapter: [1] Water
Concept: Bod - Definition and Significance

Explain reverse osmosis

Appears in 2 question papers
Chapter: [1] Water
Concept: Drinking Water Or Municipal Water

Give the preparations, properties and uses of Kevlar.

Appears in 2 question papers
Chapter: [2] Polymers
Concept: Preparation, properties and uses of Kevlar

Giass transition temperature

Appears in 2 question papers
Chapter: [2] Polymers
Concept: Effect of heat on the polymers (Glass transition temperature)

Vulcanisation

Appears in 2 question papers
Chapter: [2] Polymers
Concept: Rubbers > Compounding of Rubber (Vulcanization of Rubber)

Write a brief note on conducting polymers.

Appears in 2 question papers
Chapter: [2] Polymers
Concept: Conducting Polymers

List the uses of polymer in medicine and surgery.

Appears in 2 question papers
Chapter: [2] Polymers
Concept: Polymers in Medicine and Surgery

What are the functions of lubricants.

Appears in 2 question papers
Chapter: [4] Lubricants
Concept: Lubricants

What are the limitations of Phase rule?

Appears in 2 question papers
Chapter: [5] Phase Rule
Concept: Advantages and Limitations of Phase Rule.

"If"  x=uv & y=u/v "prove that"  jj^1=1

Appears in 2 question papers
Chapter: [5] Complex Numbers
Concept: .Circular Functions of Complex Number

Prove that sin^(-1)(cosec  theta)=pi/2+i.log(cot  theta/2)

Appears in 2 question papers
Chapter: [5] Complex Numbers
Concept: Expansion of sinn θ, cosn θ in terms of sines and cosines of multiples of θ

Explain with example how to determine crystal structure by Bragg’s X-ray spectrometer.

Appears in 2 question papers
Chapter: [1] Crystal Structure
Concept: Bragg’S Law
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