Theory of Machine When the speed of the engine fluctuates continuously above and below the mean speed, the governor is said to be Unstable Stable Isochronous Hunt Unstable Stable Isochronous Hunt ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The rotating shafts tend to vibrate violently at whirling speeds because The shafts are rotating at very high speeds Bearing centre line coincides with the axis The system is unbalanced Resonance is caused due to the heavy mass of the rotor The shafts are rotating at very high speeds Bearing centre line coincides with the axis The system is unbalanced Resonance is caused due to the heavy mass of the rotor ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following governor is used to drive a gramophone? Hartnell governor Watt governor Pickering governor Porter governor Hartnell governor Watt governor Pickering governor Porter governor ANSWER DOWNLOAD EXAMIANS APP
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 cos(α + φ) P = W tan(φ - α) P = W tan(α + φ) P = W tan(α - φ) P = W cos(α + φ) P = W tan(φ - α) P = W tan(α + φ) P = W tan(α - φ) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a four stroke I.C. engine, the turning moment during the compression stroke is Positive during major portion of the stroke Negative during major portion of the stroke Negative throughout Positive throughout Positive during major portion of the stroke Negative during major portion of the stroke Negative throughout Positive throughout ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The Coriolis component of acceleration depends upon None of these Both (A) and (B) Velocity of slider Angular velocity of the link None of these Both (A) and (B) Velocity of slider Angular velocity of the link ANSWER DOWNLOAD EXAMIANS APP
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