A jack system will increase the potential energy of a heavy load by no – McqOptions

MCQOPTIONS

1.	A jack system will increase the potential energy of a heavy load by no more than 1000 J with a work input of 2000 J. The efficiency of the jack system is no more than ?
A.	10%
B.	20%.
C.	50%
D.	not enough information given.
Answer» D. not enough information given.

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