Engineering Mechanics The law of the machine is (where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.) P = mW - C P = mW + C P = m/W + C P = C - mW P = mW - C P = mW + C P = m/W + C P = C - mW ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The moment of inertia of a rectangular section 3 cm wide and 4 cm deep about X-X axis is 9 cm4 12 cm4 16 cm4 20 cm4 9 cm4 12 cm4 16 cm4 20 cm4 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The total energy possessed by a system of moving bodies Is maximum in the start and minimum at the end Varies from point to point Is constant at every instant Is minimum in the start and maximum at the end Is maximum in the start and minimum at the end Varies from point to point Is constant at every instant Is minimum in the start and maximum at the end ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The time of flight (t) of a projectile on a horizontal plane is given by t = 2u. sinα/g t = 2u. cosα/g t = 2u/g.sinα t = 2u. tanα/g t = 2u. sinα/g t = 2u. cosα/g t = 2u/g.sinα t = 2u. tanα/g ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The moment of inertia of a thin disc of mass ‘m’ and radius ‘r’, about an axis through its center of gravity and perpendicular to the plane of the disc is mr²/6 mr²/4 mr²/2 mr²/8 mr²/6 mr²/4 mr²/2 mr²/8 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A machine having an efficiency less than 50%, is known as Ideal machine Non-reversible machine Neither reversible nor non-reversible machine Reversible machine Ideal machine Non-reversible machine Neither reversible nor non-reversible machine Reversible machine ANSWER DOWNLOAD EXAMIANS APP
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