Friction forces acts in a direction

A)
same as that of velocity
B)
at right angle to that of velocity
C)
opposite to that of velocity
D)
partly opposite and partly at right angle to the direction of velocity

Correct Answer : Option (C) :   opposite to that of velocity

Recently Updated in Automatic Control Systems Questions
For a quadratic factor in denominator of transfer function the phase angle at corner frequency (in Bode phase angle plot)
A)
is +90°
B)
is -90°
C)
depends on the damping factor
D)
None of the above

Correct Answer :   is -90°

The response to sinusoidal excitation can be found by
A)
setting s = jω in the network function
B)
setting s = -jω in the network function
C)
taking inverse transform of network function
D)
None of the above

Correct Answer :   setting s = jω in the network function

The resolution of a wire wound potentiometer is about
A)
5%
B)
1%
C)
0.1%
D)
0.001%

Correct Answer :   0.1%

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