Theory of Machine The C.G. of a link in any mechanism would experience No acceleration Both angular and linear accelerations Linear acceleration Angular acceleration No acceleration Both angular and linear accelerations Linear acceleration Angular acceleration ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When two pulleys are connected by means of a cross belt drive, then both the pulleys will rotate in _________ directions. None of these Same Perpendicular Opposite None of these Same Perpendicular Opposite ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A mechanism is an assemblage of Two links All of these Four or more than four links Three links Two links All of these Four or more than four links Three links ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the Unbalanced forces are not dangerous at higher speeds Effects of unbalances are proportional to the square of the speed Effects of unbalances are directly proportional to the speed Unbalanced couples are caused only at higher speeds Unbalanced forces are not dangerous at higher speeds Effects of unbalances are proportional to the square of the speed Effects of unbalances are directly proportional to the speed Unbalanced couples are caused only at higher speeds ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied to the disc causing precession will be (where I = Mass moment of inertia of the disc, and ωP = Angular velocity of precession of the axis of spin) (1/2).Iω² (1/2). I ω ωP I ω ωP Iω² (1/2).Iω² (1/2). I ω ωP I ω ωP Iω² ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of the belt for maximum power is (where m = Mass of the belt in kg per meter length) √(3m/T) (T.g)/3 T/3 √(T/3m) √(3m/T) (T.g)/3 T/3 √(T/3m) ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS