Here I am giving you question paper for Indian engineering service exam E & T Engineering subject in a PDF file attached with it . so you can get it easily.

Which of the following ,statements d a r e true *. - . * . q - .,v ,.?
for the diamond structure ? .
1.. Coordination number is four..
2. Packing fraction is 0.34.
3. Copper crystallizes into diamond
Structure.
4, Lattice is FCC.
(a) 1 only
(b) 1, 2 and 4
(c) 2 and 3 only
(dl 2, 3 and 4

2. Which of the following statements idare true
for a good conductor of electi-icity ?
f L
1.. Its conductivity decreases with
increasing temperature.
2. Number of free electrons is around
loz8
3. Its conductivity decreases with addition
of impurities. '

4. It is a good conductor of heat also.
(a) 1, 2, 3 and 4
(b) 1 only
(c) 2 and 3 only
(d) 3 and 4 only

3. Which of the following materials is not an
insulat,or ?
(a) . Iliamond
(b) Graphite
Id) Lucite

Consider the following statements :
The conductivity of a metal has negative
temperature coeff~cient since :
1. The electron concentration increases
' with temperature. '
2. The electron mobility decreases with
temperature.
3. The electron - lattice scattering rate
increases with temperature.
Which of the above statements islare
correct ?
(a) 1 only
(b) l'and 2
(c) 2 and 3
(dl 3 only

Which of the following is not a conducting
material ?
(a) copper
(b) Tungsten . '
(c) . Germanium
(dl Platinum

What is the chemical bonding in silicon
semiconductor ? .
(a) Metallic
(b) ' Ionic
( c ) Covalent
(d) Van der Wads
Which one of the following is a trivalent;
material ?
(a) Antimony
(b) Phosphorus
(c) Arsenic
(d) Boron

IES E & T Engineering exam papers

Attached Files

IES E & T Engineering exam papers.pdf (480.5 KB, 86 views)