The efficiency of a screw jack is maximum, when – McqOptions

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1.	The efficiency of a screw jack is maximum, when
A.	‚âà√≠¬¨¬± = 45¬¨¬®‚Äö√†¬¥ + ‚âà√¨‚àö√∫/2
B.	‚âà√≠¬¨¬± = 45¬¨¬®‚Äö√†¬¥ ‚Äö√Ñ√∂‚àö√ë‚àö¬® ‚âà√¨‚àö√∫/2
C.	‚âà√≠¬¨¬± = 90¬¨¬®‚Äö√†¬¥ + ‚âà√¨‚àö√∫
D.	‚âà√≠¬¨¬± = 90¬¨¬®‚Äö√†¬¥ ‚Äö√Ñ√∂‚àö‚Ä†‚àö‚â† ‚âà√¨‚àö√∫
Answer» C. ‚âà√≠¬¨¬± = 90¬¨¬®‚Äö√†¬¥ + ‚âà√¨‚àö√∫

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