The frequency and time domain are related through which of the following ?

A. Laplace transform and fourier integral
B. Laplace transform
C. Fourier integral
D. Either b. or c.

The type 1 system has _________ at the origin?

A. No pole
B. Net pole
C. Simple pole
D. Two poles

A conditionally stable system exhibits poor stability at______________?

A. Low frequencies
B. Reduced values of open loop gain
C. Increased values of open loop gain
D. None of the above

An increase in gain, in most systems, leads to_____________?

A. Smaller damping ratio
B. Larger damping ratio
C. Constant damping ratio
D. None of the above

In a system low friction co-efficient facilitates___________?

A. Reduced velocity lag error
B. Increased velocity lag error
C. Increased speed of response
D. Reduced time constant of the system

In order to increase the damping of a badly underdamped system which of following compensators may be used ?

A. Phase-lead
B. Phase-lag
C. Both a. and b.
D. Either a. and b.

Which of the following can be measured by the use of a tachogenerator ?

A. Acceleration
B. Speed
C. Speed and acceleration
D. Displacement

Which of the following is the definition of proportional band of a controller ?

A. The range of air output as measured variable varies from maximum to minimum
B. The range of measured variables from set value
C. The range of measured variables through which the air output changes from maximum to minimum
D. Any of the above

Which of the following devices is used for conversion of co-ordinates ?

A. Microsyn
B. Selsyn
C. Synchro-resolver
D. Synchro-transformer

A phase lag lead network introduces in the output_______________?

A. Lag at all frequencies
B. Lag at high frequencies and lead at low frequencies
C. Lag at low frequencies and lead at high frequencies
D. None of the above