Podcast
Questions and Answers
What is the main advantage of the Direct Comparison method of measurements?
What is the main advantage of the Direct Comparison method of measurements?
- High accuracy with low uncertainty (correct)
- Does not require comparison with a standard value
- Requires minimal training and time
- Can be carried out without a trained operator
Which method of measurement relies on achieving a balance in weight to determine the unknown current?
Which method of measurement relies on achieving a balance in weight to determine the unknown current?
- Indirect measurement method (correct)
- Differential measurement method
- Substitution method
- Null measurement method
Which of the following is a characteristic of the Substitution method of measurements?
Which of the following is a characteristic of the Substitution method of measurements?
- No need for any standard value
- Uses digital output readings
- Standard resistance is adjusted until a balance is reached (correct)
- Measurement relies on continuous monitoring
What is a key feature of the null measurement method?
What is a key feature of the null measurement method?
In which type of measuring instruments are damping forces used to ensure stability of the pointer?
In which type of measuring instruments are damping forces used to ensure stability of the pointer?
What distinguishes Digital instruments from Analogue instruments in terms of signal representation?
What distinguishes Digital instruments from Analogue instruments in terms of signal representation?
Which type of measurement instruments have two types of scales: linear and non-linear?
Which type of measurement instruments have two types of scales: linear and non-linear?
In which method can a roughly balanced state lead to pointer deflection or a change in output reading due to differences in equilibrium and actual states?
In which method can a roughly balanced state lead to pointer deflection or a change in output reading due to differences in equilibrium and actual states?
What type of force is used in Analogue instruments to prevent continuous movement of the pointer to its maximum deflection?
What type of force is used in Analogue instruments to prevent continuous movement of the pointer to its maximum deflection?
Which method of measurements does not require standard current values for measurement?
Which method of measurements does not require standard current values for measurement?
Which type of instrument is used only for direct current measurements?
Which type of instrument is used only for direct current measurements?
What is the primary factor that causes the pointer to initially overshoot its steady-state position in an analog instrument?
What is the primary factor that causes the pointer to initially overshoot its steady-state position in an analog instrument?
Which type of control torque produces a restoring force that is proportional to the deflection angle?
Which type of control torque produces a restoring force that is proportional to the deflection angle?
For a gravity-controlled instrument, the current is proportional to which function of the deflection angle?
For a gravity-controlled instrument, the current is proportional to which function of the deflection angle?
What is the primary advantage of gravity-controlled instruments over spring-controlled instruments?
What is the primary advantage of gravity-controlled instruments over spring-controlled instruments?
Which equation describes the relationship between the deflecting torque and the current in an instrument?
Which equation describes the relationship between the deflecting torque and the current in an instrument?
In the equation of motion for an analog instrument during the transient period, what does the term $T_i$ represent?
In the equation of motion for an analog instrument during the transient period, what does the term $T_i$ represent?
Which property of the spring material is essential for ensuring accurate measurements in spring-controlled instruments?
Which property of the spring material is essential for ensuring accurate measurements in spring-controlled instruments?
What is the primary disadvantage of gravity-controlled instruments?
What is the primary disadvantage of gravity-controlled instruments?
Which type of instrument is primarily used for alternating current measurements?
Which type of instrument is primarily used for alternating current measurements?
What is the relationship between the deflecting torque and the current in an instrument?
What is the relationship between the deflecting torque and the current in an instrument?
If the current producing a deflection angle of 90° is 2 A, what current is required to produce a deflection angle of 45° assuming spring control?
If the current producing a deflection angle of 90° is 2 A, what current is required to produce a deflection angle of 45° assuming spring control?
What is the purpose of damping torque in an instrument?
What is the purpose of damping torque in an instrument?
Which type of damping is NOT effective in many situations?
Which type of damping is NOT effective in many situations?
What is the principle behind eddy current damping?
What is the principle behind eddy current damping?
What is the advantage of over-damped performance in an instrument?
What is the advantage of over-damped performance in an instrument?
Which performance type is characterized by low damped behavior and high oscillations that decay with time?
Which performance type is characterized by low damped behavior and high oscillations that decay with time?
What is the characteristic of critical-damped performance?
What is the characteristic of critical-damped performance?
If the damping constant is less than $4\sqrt{CJ}$, what type of performance can be expected?
If the damping constant is less than $4\sqrt{CJ}$, what type of performance can be expected?
What is the relationship between the damping torque and the angular velocity of the pointer?
What is the relationship between the damping torque and the angular velocity of the pointer?
What is the main difference between linear and non-linear scale instruments?
What is the main difference between linear and non-linear scale instruments?
Which of the following is a key characteristic of mechanical measuring instruments?
Which of the following is a key characteristic of mechanical measuring instruments?
What is the main advantage of digital instruments over mechanical and electrical instruments?
What is the main advantage of digital instruments over mechanical and electrical instruments?
Which type of measuring instrument is suitable for measuring steady and stable operations?
Which type of measuring instrument is suitable for measuring steady and stable operations?
What is the main disadvantage of electrical measuring instruments compared to electronic instruments?
What is the main disadvantage of electrical measuring instruments compared to electronic instruments?
What is the main advantage of a graphical display over a pointer display in analogue instruments?
What is the main advantage of a graphical display over a pointer display in analogue instruments?
What is the main advantage of a digital display over an analogue display?
What is the main advantage of a digital display over an analogue display?
Which physical effect is utilized in ammeters and voltmeters?
Which physical effect is utilized in ammeters and voltmeters?
Which type of measuring instrument is suitable for measuring transient and dynamic applications?
Which type of measuring instrument is suitable for measuring transient and dynamic applications?
What is the main disadvantage of pointer-type analogue displays?
What is the main disadvantage of pointer-type analogue displays?
