Question: A conditionally stable system exhibits poor stability at______________?

• 1. low frequencies
• 2. reduced values of open loop gain
• 3. increased values of open loop gain
• 4. none of the above

Question: The type 1 system has _________ at the origin?

• 1. no pole
• 2. net pole
• 3. simple pole
• 4. two poles

Question: Spring constant in force-voltage analogy is analogous to_____________?

• 1. capacitance
• 2. reciprocal of capacitance
• 3. current
• 4. resistance

Question: Static error coefficients are used as a measure of the effectiveness of closed loop systems for specified ___________ input signal?

• 1. acceleration
• 2. velocity
• 3. position
• 4. all of the above

Question: The type 2 system has __________ at the origin?

• 1. no net pole
• 2. net pole
• 3. simple pole
• 4. two poles

Question: Velocity error constant of a system is measured when the input to the system is unit ___________ function?

• 1. parabolic
• 2. ramp
• 3. impulse
• 4. step

Question: If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is_____________?

• 1. not necessarily stable
• 2. stable
• 3. unstable
• 4. always unstable

Question: Addition of zeros in transfer function causes which of the following ?

• 1. Lead-compensation
• 2. Lag-compensation
• 3. Lead-lag compensation
• 4. None of the above

Question: The phase lag produced by transportation relays_____________?

• 1. is independent of frequency
• 2. is inverseh’proportional to frequency
• 3. increases linearly with frequency
• 4. decreases linearly with frequency

Question: In pneumatic control systems the control valve used as final control element converts____________?

• 1. pressure signal to electric signal
• 2. pressure signal to position change
• 3. electric signal to pressure signal
• 4. position change to pressure signal