Theory of Machine The inversion of a mechanism is Turning its upside down Changing of a higher pair to a lower pair Obtained by fixing different links in a kinematic chain Obtained by reversing the input and output motion Turning its upside down Changing of a higher pair to a lower pair Obtained by fixing different links in a kinematic chain Obtained by reversing the input and output motion ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Frequency of vibrations is usually expressed in Number of cycles per minute None of these Number of cycles per hour Number of cycles per second Number of cycles per minute None of these Number of cycles per hour Number of cycles per second ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The Scott-Russell mechanism consists of Turning and rotary pairs Sliding and turning pairs Sliding pairs only Sliding and rotary pairs Turning and rotary pairs Sliding and turning pairs Sliding pairs only Sliding and rotary pairs 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 rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will Become equal to R/4 Become equal to R/2 Remain same as before Become equal to 2R Become equal to R/4 Become equal to R/2 Remain same as before Become equal to 2R ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The behaviour of gases can be fully determined by 3 laws 2 laws 1 law 4 laws 3 laws 2 laws 1 law 4 laws ANSWER DOWNLOAD EXAMIANS APP
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