100) Two trains travel in opposite direction at 36 km/hr and 45 km/hr and a man sitting in slower train passes the faster train in 8 seconds. The length of the faster train is
Answer is:
180 m
Related RRB JE Mechanical Question Paper 2014 (Set-3) with Answer Key
Answer is:
Varanasi
Answer is:
ultraviolet as well as infrared rays
Explanation:
In arc welding, eyes need to be protected against the tiny chips of metals and from the harmful radiation of either UV or IR radiations.
Answer is:
prevent sparking during commutation
Explanation:
A carbon brush is a sliding contact used to transmit electrical current from a static to a rotating part in a motor or generator, and, as regards DC machines, ensuring a spark-free commutation.