120) Replacement studies are made on the following basis:

Answer is:

any one of the above.

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121) String diagram is used

Answer is:

all of the above

Explanation:

String diagram is one of the useful and simplest techniques of method study.
It can be defined as a scale model on which a thread is used to trace the path or movements of man and materials during a specified sequence of events.
It can also be stated that string diagram in a special form of flow diagram.

122) Which of the following depreciation system ensures that the interest be charged on the cost of machine asset every year on the book value, but the rate of depreciation every year remains constant

Answer is:

annuity charging method

123) Bin card is used in

Answer is:

stores

124) Slack represents the difference between the

Answer is:

latest allowable time and the earliest expected time

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