Government RRB Question:
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WHAT IS DIFFERENCE BETWEEN FORCE AND WEIGHT?

Answer:

Weight=mgh
where m=mass
g=gravity
h=height

Force=ma
where m=mass
a=accelaration

weight=Force X Distance

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FRICATION FORCE ALWAYS OPPSES TO ........?Which of the following transformer of same rating can be used for paralling

a)star-delta and delta-star
b)star-star and delta-delta
c)delta-delta and delta-star