List of practice Questions

If the first reflection from an FCC crystal has a Bragg angle \( \theta = 21.5^\circ \), the \( \theta \) corresponding to the second reflection is
Metallic bond is not characterized by
The unit of diffusional flux is
The windows of an airplane are made in
Cermet are examples of
A continuous and aligned glass fibre reinforced composite consists of 40 vol% of glass fibres having a modulus of elasticity 69 GPa and 60 vol% of a polyester resin that when hardened displays a modulus of elasticity 3.4 GPa. What is the modulus of elasticity in longitudinal direction?
The fracture toughness values of Ceramic Matrix Composites lie between
Nanostructured materials have crystallites ranging in the size of ____________
Which of the following is not an allotropic form of iron?
The mean grain diameter corresponding to ASTM number of 0.5 is
If resistivity is \( 1.7 \times 10^{-6} \) \( \Omega \)cm, area of cross-section is \( 19.6 \times 10^{-8} \) m\(^2\), length is 31.4 m, the resistance is found to be
In N-Type semiconductor, the Fermi Level
The power loss (\( P \)) in a dielectric is given by _________ where \( V \) is voltage, \( I \) is current, \( \delta \) is loss tangent
Which of the following is not made of calcium carbonate?
Zirconia is present in _________ crystal structure in the mineral baddeleyite.
________is the property of titania.
Addition of ________ to alumina increases its toughness.
The limiting compositions of \( \text{Al}_2\text{O}_3 \) : \( \text{SiO}_2 \) in mullite solid solution series are _________
In flat plate test, concave glazed side refers to _________ in glaze which will lead to _________.
_________ is not a glass former.
Danner process is used to prepare glass _________ continuously.
Crown glass is a _________ glass.
_________ is not a neutral refractory.
_________ is used to calculate theoretical weight deposited on the electrode during electrolysis.
What is the major problem with fuel cell?