BE Mechanical Engineering छमाही २ (इंजीनियरिंग) - University of Mumbai Important Questions

If 𝑨=𝒙^𝟐𝒛 𝒊−𝟐𝒚^𝟐𝒛^𝟐𝒋+𝒙𝒚^𝟐𝒛𝒌. Find 𝛁.𝑨 at point (1,-1,1).

⦁ Determine the magnetic field required to bend a beam consisting of electrons of speed 3  × 10⁷  m/s in a circle of radius 5 cm.

Explain construction and working of cathode ray tube.

an electron is accelerated through a potential difference of 5kv and enters a uniform magnetic field of 0.02 wb/m² acting normal to the direction of electron motion. Determine radius of the path. 

An electron is accelerated through a potential difference of 18 kV in a colour TV cathode ray tube. Calculate the kinetic energy and speed of electron.

Explain the concept of electrostatic focusing in electron impacts. 

An electron is accelerated through a potential difference of 5 kV and enters a uniform magnetic field of 0.02 `(wb)/(m^2)` acting normal to the direction of electron motion.
Determine the radius of path. 

Draw the block diagram of cathode ray tube and briefly explain its parts. 

Explain how A.C voltage and its frequency is measured using CRO.

Write a note on electrostatic focusing.

How is Lissajous figures used to measure unknown frequency?

Derive Bethe’s Law for electron refraction.

An electron enters a uniform magnetic field B=0.23x10-2 Wb/m2 at 450 angle to B. Determine the radius and pitch of helical path. Assume electron speed to be 3x107 m/s.

With neat diagram explain construction and working of atomic force microscope. 

What are the different techniques to synthesise nanomaterial? Explain one of them in detail.

What are different techniques to synthesis nanomaterial?
Explain one of them in detail. 

With neat diagram explain construction and working of scanning electron microscope. 

Explain construction and working of atomic force microscope.

Explain different types of carbon nanotubes and give its applications.

What is difference between Bottom up and Top Down Approach with respect to Nanotechnology.