List of top Questions asked in Tamil Nadu Common Entrance Test

Choose the correct statement
What are the trade names of two most common aramid materials?
Conductive polymers are mainly synthesized by
Polyvinyl chloride is
The carbon content required in steels to produce scissors and knives is
Martensitic transformations
Corrosion resistance of steel is increased by adding
What will happen at the accelerating or tertiary creep stage?
Fatigue failure occurs due to
Which of the following is known as the Griffith equation?
If \( K \) and \( \sigma \) be the thermal and electrical conductivities of a metal at temperature \( T \), then
The lattice constant of a BCC unit cell with an atomic radius of 1.24 Å is
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