Electrical control systems

[amp_mcq option1=”Low-level oscillations” option2=”High-level oscillations” option3=”Conditional stability” option4=”Overdamping” correct=”option2″]

Detailed SolutionIn a stable control system saturation can cause which of the following ?

[amp_mcq option1=”Frequency response” option2=”Absolute stability” option3=”Relative stability” option4=”Time response” correct=”option3″]

Detailed SolutionPhase margin of a system is used to specify which of the following ?

[amp_mcq option1=”The order of the system” option2=”The time constant” option3=”The output for any given input” option4=”The steady state gain” correct=”option1″]

Detailed SolutionTransfer function of a system is used to calculate which of the following ?

[amp_mcq option1=”universal motor” option2=”single phase induction motor” option3=”servomotor is basically a A. universal motor B. single phase induction motor C. two phase induction motor” option4=”three phase induction motor” correct=”option1″]

Detailed Solution

[amp_mcq option1=”Reduced velocity lag error” option2=”Increased velocity lag error” option3=”Increased speed of response” option4=”Reduced time constant of the system” correct=”option1″]

Detailed SolutionIn a system low friction coefficient facilitates

[amp_mcq option1=”charge” option2=”current” option3=”inductance” option4=”resistance” correct=”option4″]

Detailed SolutionMass, in force-voltage analogy, is analogous to

[amp_mcq option1=”rises slowly” option2=”rises quickly” option3=”decays slowly” option4=”decays quickly” correct=”option1″]

Detailed SolutionThe transient response, with feedback system,

[amp_mcq option1=”Band width” option2=”Overall gain” option3=”Distortion” option4=”Instability” correct=”option2″]

Detailed SolutionAs a result of introduction of negative feedback which of the following will not decrease?

[amp_mcq option1=”charge” option2=”resistance” option3=”reciprocal of inductance” option4=”reciprocal of conductance E. none of the above” correct=”option3″]

Detailed SolutionThe viscous friction co-efficient, in force-voltage analogy, is analogous to

[amp_mcq option1=”Less expensive” option2=”Recalibration is not required for maintaining the required quality of the output” option3=”Construction is simple and maintenance easy” option4=”Errors are caused by disturbances” correct=”option4″]

Detailed SolutionFor open control system which of the following statements is incorrect ?