Theory of Machine A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when a = 0 and b is +ve a is +ve and b is also +ve a is +ve and b is -ve a is +ve and b = 0 a = 0 and b is +ve a is +ve and b is also +ve a is +ve and b is -ve a is +ve and b = 0 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle θ, the angular velocity of the connecting rod is given by ω sinθ/(n² - sin²θ)1/2 ω cosθ/(n² - sin²θ)1/2 ω sinθ/(n² - cos²θ)1/2 ω cosθ/(n² - cos²θ)1/2 ω sinθ/(n² - sin²θ)1/2 ω cosθ/(n² - sin²θ)1/2 ω sinθ/(n² - cos²θ)1/2 ω cosθ/(n² - cos²θ)1/2 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The secondary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is Both (A) and (B) 180° and 360° 0° and 90° None of these Both (A) and (B) 180° and 360° 0° and 90° None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body) P = W tan α P = W tan (α + φ) P = W (cos α + μ sin α) P = W (sin α + μ cos α) P = W tan α P = W tan (α + φ) P = W (cos α + μ sin α) P = W (sin α + μ cos α) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The size of cam depends upon Base circle Pitch circle Prime circle Pitch curve Base circle Pitch circle Prime circle Pitch curve ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The dynamic friction is the friction experienced by a body, when the body Is at rest None of these Just begins to slide over the surface of the other body Is in motion Is at rest None of these Just begins to slide over the surface of the other body Is in motion ANSWER DOWNLOAD EXAMIANS APP
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