Related Questions

In a simple harmonic motion, the velocity vector with respect to displacement vector
A is in phase
B leads by 900
C leads by 1800
D lags by 900
The vector sum of cutting velocity and chip velocity is __________ shear velocity.
A Equal to
B Less than
C More than
D None of these
In order to completely specify angular displacement by a vector, it must fix
A Direction of the axis of rotation
B Magnitude of angular displacement
C Sense of angular displacement
D All of these
কোনো কণা P(2,3,5) বিন্দু থেকে Q(3,4,5) বিন্দুতে স্থানান্তরিত হলে এর সরণ ভেক্টর কী হবে? (What will be the displacement vector of a particle that moves from point P(2,3,5) to Q(3,4,5)?
A 5i^ + 7j^ + 9k^
B 6i^ + 12j^ + 25k^
C i^ + j^
D i^ + j^ + k^
A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is ________ of the jet velocity
A One-half
B One-third
C Two-third
D Three-fourth
A body of mass ‘m’ moving with a constant velocity ‘v’ strikes another body of same mass moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is
A v
B 2v
C 4v
D 8v
If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix ‘I’ and ‘o’ stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity
A Vi = Vo
B Vt > Vo
C U
D V = Uo
A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.
A 45
B 60
C 80
D 95
In a cam drive with uniform velocity follower, the sharp corners of the displacement diagram are rounded off at the beginning and at the end of each stroke. This is done
A Because of difficulty in manufacturing cam profile
B Because of loose contact of follower with cam surface
C In order to have acceleration in beginning and retardation at the end of stroke within the finite limits
D Because the uniform velocity motion is a partial parabolic motion
The velocity of a particle moving with simple harmonic motion, at any instant is given by (where $$\omega $$ = Displacement of the particle from mean position)
A $$\omega \sqrt {{{\text{x}}^2} - {{\text{r}}^2}} $$
B $$\omega \sqrt {{{\text{r}}^2} - {{\text{x}}^2}} $$
C $${\omega ^2}\sqrt {{{\text{x}}^2} - {{\text{r}}^2}} $$
D $${\omega ^2}\sqrt {{{\text{r}}^2} - {{\text{x}}^2}} $$

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