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Dynamic Characteristics MCQs

Practice Dynamic Characteristics MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 2
Measurements & InstrumentationDynamic Characteristics

A smaller time constant in a first-order measuring instrument generally means?

  • AFaster response
  • BSlower response
  • CLower static sensitivity necessarily
  • DInfinite hysteresis
Report an error
Correct Answer: A. Faster response
Explanation: A smaller time constant causes the exponential transient to decay more quickly, producing a faster response.
Reference: Standard measurements and instrumentation: dynamic characteristics
Question 3
Measurements & InstrumentationDynamic Characteristics

The term dead time in an instrument refers to?

  • AA delay before the output begins responding to an input change
  • BThe final steady-state error only
  • CThe calibration interval
  • DThe full-scale value
Report an error
Correct Answer: A. A delay before the output begins responding to an input change
Explanation: Dead time is the interval between an input change and the beginning of the observable output response.
Reference: Standard measurements and instrumentation: dynamic characteristics
Question 4
Measurements & InstrumentationDynamic Characteristics

A zero-order instrument ideally produces an output that is?

  • AInstantaneously proportional to the input
  • BAlways delayed by one time constant
  • CAlways oscillatory
  • DIndependent of input
Report an error
Correct Answer: A. Instantaneously proportional to the input
Explanation: An ideal zero-order instrument has no dynamic energy-storage effect and follows the input proportionally without dynamic lag.
Reference: Standard measurements and instrumentation: dynamic characteristics
Question 5
Measurements & InstrumentationDynamic Characteristics

For a first-order instrument described by T dy/dt + y = Kx, K represents the?

  • AStatic sensitivity or gain
  • BTime constant
  • CDamping ratio
  • DNatural frequency
Report an error
Correct Answer: A. Static sensitivity or gain
Explanation: At steady state dy/dt=0, so y=Kx; therefore K is the static gain or sensitivity.
Reference: Standard measurements and instrumentation: dynamic characteristics