[Works Manager, 2018]
11. The function of fuse in an electrical circuit is:
To avoid electric shocks
To regulate the flow of current
To break the circuit in case of overloading or short-circuiting
None of these
12. An electrical appliance is earthed to:
Protect the appliance against any damage
Prevent shocks
Reduce consumption
Avoid short-circuiting
13. The inside of a photographic camera is coated black to avoid:
Scattering of light
Total internal reflection of light
Reflection of light
Absorption of light
14. If a paste of rice or wheat flour is left overnight in the kitchen, its volume increases significantly because of:
The aromatic air of the kitchen
Bacterial growth
Swelling of starch particles in the flour due to absorption of water and air
The release of carbon dioxide due to the activity of yeast
15. It is not advisable to sleep under a tree at night because of the:
Release of less oxygen
Release of more oxygen
Release of carbon dioxide
Release of carbon monoxide