Engineering Mechanics A machine having an efficiency less than 50%, is known as Reversible machine Non-reversible machine Ideal machine Neither reversible nor non-reversible machine Reversible machine Non-reversible machine Ideal machine Neither reversible nor non-reversible machine ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics When two elastic bodies collide with each other, All of these The two bodies begin to regain their original shape The two bodies will momentarily come to rest after collision The two bodies tend to compress and deform at the surface of contact All of these The two bodies begin to regain their original shape The two bodies will momentarily come to rest after collision The two bodies tend to compress and deform at the surface of contact ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Efficiency of a screw jack is given by (where α = Helix angle, and φ = Angle of friction.) tan(α + φ)/tanα tanα/tan (α + φ) None of these tan(α - φ)/tanα tan(α + φ)/tanα tanα/tan (α + φ) None of these tan(α - φ)/tanα ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The principle of transmissibility of forces states that, when a force acts upon a body, its effect is Same at every point on its line of action Different at different points on its line of action Maximum, if it acts at the center of gravity of the body Minimum, if it acts at the center of gravity of the body Same at every point on its line of action Different at different points on its line of action Maximum, if it acts at the center of gravity of the body Minimum, if it acts at the center of gravity of the body ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The resultant of the two forces ‘P’ and ‘Q’ is ‘R’. If ‘Q’ is doubled, the new resultant is perpendicular to ‘P’. Then None of the listed here Q = R P = Q Q = 2R None of the listed here Q = R P = Q Q = 2R ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The acceleration of a particle moving with simple harmonic motion is __________ at the mean position. Minimum None of these Zero Maximum Minimum None of these Zero Maximum ANSWER DOWNLOAD EXAMIANS APP
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