Time Left - 12:00 mins

ESE 2019 Technical (Materials Science : Quiz 1 )

Attempt now to get your rank among 290 students!

Question 1

Consider the following factors :
1) Number of turns of the coil
2) Length of the coil
3) Area of cross-section of the coil
4) Permeability of the core
On which of the above factors does inductance, depend ?

Question 2

Which among the following is an example for laminar composite?

Question 3

A roller follower in radial cams moves in direction:

Question 4

Turbine blades are normally made of:

Question 5

Statement (I): Ferrite cored coils are used in high frequency tuned circuits.
Statement (II): Ferrite cored coils have high Q as compared to iron-cored coils.

Question 6

Molydenum has a Body-Centered Cubic, (BCC) structure with an atomic radius of 1.36 Å. Then the lattice parameter for BCC molybdenum is:

Question 7

The packing factor 0.74 is for:
i. Hexagonal Close Packed Structure
ii. Face Centered Cubic Structure
iii. Body-Centered Cubic Structure

Question 8

The ratio of ionic radii of Cations i.e., rc and that of Anions i.e. rA for stable and unstable ceramic crystal structure, is:

Question 9

A type I superconductor is
1) A conductor of infinite conductivity at all temperatures.
2) A conductor with very large conductivity below a critical temperature.
3) A material showing susceptibility = - 1 drastically reduced by a critical temperature.
4) A perfect conductor having conductivity drastically reduced by a critical current.
Which of these statements are correct?

Question 10

Assertion (A): Magnetic susceptibility value of an antiferromagnetic substance at 0o K is zero.
Reason (R): At 0oK, atomic magnetic moments are frozen with magnetic dipoles pointing in random directions.
  • 290 attempts
  • 6 upvotes
  • 4 comments
Aug 8ESE & GATE EC