For hardness test of copper in Brinell hardness tester, the diameter of ball is _______

In this test, the strength and quality of concrete or rock is assessed by measuring the ___ of an ultrasonic pulse.

The indenter used in Brinell hardness test is a ________

An ultrasonic pulse velocity test is an _________

The construction joints in cement concrete _______

The flexural strength (or modulus of rupture) is obtained for the first peak load, Pmax as ___________

The shape of specimen used in compression test is Cube and cylinder.

A data acquisition system capable of digitally recording and storing load and deflection data at least _______