Engineering Answers

In a mortar, the binding material is

A. cement

B. sand

C. surkhi

D. cinder.

Pick up the correct statement from the following:

A. For thin structures subjected to wetting and drying, the water cement ratio should be 0.45

B. For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55

C. For thin structures which remain continuously under water, the water-cement ratio by weight should be 0.55

D. For massive concrete structures which remain continuously under water, the water cement ratio by weight should be 0.65

Lacquer paints

A. are generally applied on structural steel

B. are less durable as compared to enamel paints

C. consist of resin and nitro-cellulose

D. contain alcohol as thinner

E. all the above.

The indicating liquid in the manometer shown in the figure below is water and benzene with a density of 880 kg/m3. These two liquids are essentially insoluble in each other. If the two liquids are essentially insoluble in each other. If the manometer reading is AZ = 43.99 cm of water, what is the pressure difference P1 - P2 in kN/m2.

An elastic linear spring of spring constant 144 N/cm is compressed from an initial unconstrained length to a final of 6cm. If the work required on the spring is 648J, determine the initial length of the spring in centimeters: