Theory of Machine In a four stroke I.C. engine, the turning moment during the compression stroke is Positive throughout 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 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The cam follower generally used in aircraft engines is Knife edge follower Flat faced follower Roller follower Spherical faced follower Knife edge follower Flat faced follower Roller follower Spherical faced follower ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The maximum fluctuation of speed is the Variations of speed above and below the mean resisting torque line Sum of maximum and minimum speeds Difference of the maximum and minimum speeds Difference of minimum fluctuation of speed and the mean speed Variations of speed above and below the mean resisting torque line Sum of maximum and minimum speeds Difference of the maximum and minimum speeds Difference of minimum fluctuation of speed and the mean speed ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank) m.ω².r (sin 2θ/n) m.ω².r sinθ m.ω².r cosθ m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) m.ω².r sinθ m.ω².r cosθ m.ω².r (cos 2θ/n) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the two elements of a pair have a surface contact when relative motion takes place and the surface of one element slides over the surface of the other, the pair formed is known as a Higher pair Self-closed pair Lower pair Force-closed pair Higher pair Self-closed pair Lower pair Force-closed pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The mechanism in which two are turning pairs and two are sliding pairs, is called a Double slider crank chain Elliptical trammel Scotch yoke mechanism All of these Double slider crank chain Elliptical trammel Scotch yoke mechanism All of these ANSWER DOWNLOAD EXAMIANS APP
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