Theory of Machine In a screw jack, the effort required to lift the load W is given by (where α = Helix angle, and φ = Angle of friction) P = W tan(α - φ) P = W tan(α + φ) P = W tan(φ - α) P = W cos(α + φ) P = W tan(α - φ) P = W tan(α + φ) P = W tan(φ - α) P = W cos(α + φ) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a four stroke I.C. engine, the turning moment during the compression stroke is Negative during major portion of the stroke Positive throughout Negative throughout Positive during major portion of the stroke Negative during major portion of the stroke Positive throughout Negative throughout Positive during major portion of the stroke ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Elements of pairs held together mechanically is known as Closed pair Mechanical pair Open pair Rolling pair Closed pair Mechanical pair Open pair Rolling pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the piston will be Minimum Zero None of these Maximum Minimum Zero None of these Maximum ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A combination of kinematic pairs, joined in such a way that the relative motion between the links is completely constrained, is called a Inversion Kinematic chain Structure Mechanism Inversion Kinematic chain Structure Mechanism ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A Hartnell governor is a Spring loaded governor Inertia governor Pendulum type governor Dead weight governor Spring loaded governor Inertia governor Pendulum type governor Dead weight governor ANSWER DOWNLOAD EXAMIANS APP
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