Measurement & Instrumentation(Electrical Engineering Questions ) Questions and Answers

Question 1. The ratio of maximum displacement deviation to full scale deviation of the instrument is called_______________?
  1.    static sensitivity
  2.    dynamic deviation
  3.    linearity
  4.    precision or accuracy
Explanation:-
Answer: Option C. -> linearity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2. The rectifier instrument is not free from_______________?
  1.    temperature error
  2.    wave shape error
  3.    frequency error
  4.    all of the above
Explanation:-
Answer: Option C. -> frequency error
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3. Various adjustments in an energy meter include_______________?
  1.    light load or friction
  2.    lag and creep
  3.    overload and voltage compensation
  4.    temperature compensation
  5.    all of the above
Explanation:-
Answer: Option E. -> all of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 4. A multirangq instrument has________________?
  1.    multiple shunt or series resistances inside the meter
  2.    multicoii arrangement
  3.    variable turns of coil
  4.    multi range meters inside the measurement system
  5.    any of the above
Explanation:-
Answer: Option A. -> multiple shunt or series resistances inside the meter
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 5. The principle on which vector voltmeter is based is_____________?
  1.    that it works on the principle of complex variation
  2.    that it measures the response of linear ramp voltage
  3.    same as digital meter
  4.    that it measures the amplitude of a single at two points and at the same time measures their phase difference
Explanation:-
Answer: Option D. -> that it measures the amplitude of a single at two points and at the same time measures their phase difference
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 6. Which of the following is measured by using a vector voltmeter ?
  1.    Amplifier gain and phase shift
  2.    Filler transfer functions
  3.    Complex insersion loss
  4.    All of the above
Explanation:-
Answer: Option D. -> All of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 7. An instrument transformer is used to extend the range of______________?
  1.    induction instrument
  2.    electrostatic instrument
  3.    moving coil instrument
  4.    any of the above
Explanation:-
Answer: Option A. -> induction instrument
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 8. The power of a n-phase circuit can be measured by using a minimum of_______________?
  1.    (n – 1) wattmeter elements
  2.    n wattmeter elements
  3.    (n + 1) wattmeter elements
  4.    2n wattmeter elements
Explanation:-
Answer: Option A. -> (n – 1) wattmeter elements
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 9. In an energy meter braking torque is produced to________________?
  1.    safe guard it against creep
  2.    brake the instrument
  3.    bring energy meter to stand still
  4.    maintain steady speed and equal to driving torque
Explanation:-
Answer: Option D. -> maintain steady speed and equal to driving torque
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 10. Most sensitive galvanometer is_____________?
  1.    elastic galvanometer
  2.    vibration galvanometer
  3.    Duddlb galvanometer
  4.    spot ballistic galvanometer
Explanation:-
Answer: Option D. -> spot ballistic galvanometer
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
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