ISRO Scientist or Engineer Mechanical 2020

Which of the following hardness tester uses Diamondconetype indenter?

In a two component system, if the non-compositional variable is only temperature, the number of degrees of freedom in the case of a single phase field as per Gibbs Phase Rule is?

In an iron—carbon diagram, the percentage by weight of carbon at eutectoid composition is

Of the various microstructures that may be produced for a given steel alloy, which among the following is the hardest form

Which apringsteel is widely used for aircraft engine valves

If $$K_{f}$$ is the fatigue stress concentration factor and $$K_{t}$$ is the theoretical stress concentration factor then, the notch sensitivity q is?

Beach or clamshell markson a failed metallic surface are typical of

In vibration isolation if $$\frac{\omega}{\omega_{n}}$$ is less than $$\sqrt{2}$$ then transmissibilty will be

The natural frequency of a simply supported beam of length l with mass M at its centre , flexual rigidity EI and negligable beam mass is

A machine component of natural frequency 200 $$\frac{rad}{s}$$ is Subjected to a base motion from the machine which is harmonic in nature with amplitude 3 $$\frac{m}{s^{3}}$$ at $$\frac{rad}{sec}$$ Whatis the peak amplitude of relative displacement of the components if the damping is negligable