MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Instrumentation Transducers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A displacement of ±12.5 mm results in a secondary voltage of 5 V in an LVDT. If the then secondary voltage is 3.2 V, the absolute value of the corresponding displacement would be |
| A. | 4 mm |
| B. | 6 mm |
| C. | 8 mm |
| D. | 10 mm |
| Answer» D. 10 mm | |
| 2. |
For measuring the magnitude as well as direction of displacement using LVDT, it is used in conjunction with |
| A. | an amplitude modulator followed by a low-pass filter |
| B. | a phase-sensitive demodulator followed by a low-pass filter |
| C. | a twin T-network |
| D. | an integrator |
| Answer» C. a twin T-network | |
| 3. |
Air cored inductive transducer are suitable for use ________ |
| A. | at lower frequencies |
| B. | at higher frequencies |
| C. | at equal frequencies |
| D. | as are employed for iron cored transducer |
| Answer» C. at equal frequencies | |
| 4. |
Match the following list :List - IList - II(a) Tachogenerator(i) Electrical to mechanical signal(b) LVDT(ii) Rotating transformer(c) Synchro(iii) Displacement into voltage(d) Servo motors(iv) Rotary motion into an electrical signal |
| A. | (a) – (iii), (b) – (iv), (c) – (i), (d) – (ii) |
| B. | (a) – (iv), (b) – (iii), (c) – (i), (d) – (ii) |
| C. | (a) – (iv), (b) – (iii), (c) – (ii), (d) – (i) |
| D. | (a) – (iii), (b) – (iv), (c) – (ii), (d) – (i) |
| Answer» D. (a) – (iii), (b) – (iv), (c) – (ii), (d) – (i) | |
| 5. |
Direction: The following item consists of two statements, one labelled as ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items using the code given below:Statement I: The null voltage of an LVDT cannot be reduced to an insignificant value.Statement II: Hall effect transducers are primarily used to measure flux density. |
| A. | Both Statement I and Statement II are individually true and Statement II is the correct explanation of Statement I |
| B. | Both Statement I and Statement II are individually true but Statement II is not the correct explanation of Statement I |
| C. | Statement I is true but Statement II is false |
| D. | Statement I is false but Statement II is true |
| Answer» C. Statement I is true but Statement II is false | |
| 6. |
An inductive pick-up used to measure the speed of a shaft has 120-tooth wheel. If the number of pulse produced in a second is 3000, the r.p.m. of the shaft is |
| A. | 1200 |
| B. | 1500 |
| C. | 1800 |
| D. | 3600 |
| Answer» C. 1800 | |
| 7. |
FOR_THICKNESS_MEASUREMENT,_MATERIAL_SHOULD_HAVE_CONSTANT_PERMEABILITY_AND_RESISTIVITY.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Inductive_potentiometers_are_used_to_measure_________________$ |
| A. | Voltage |
| B. | Current |
| C. | Displacement |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 9. |
Which of the following is correct for synchro? |
| A. | Transformer type displacement transducer |
| B. | Inductive type displacement transducer |
| C. | Capacitive type displacement transducer |
| D. | Resistive type displacement transducer |
| Answer» B. Inductive type displacement transducer | |
| 10. |
Which of the following device can be used for measuring relative angular displacement between two systems? |
| A. | Tachometer |
| B. | Synchro |
| C. | Speedo meter |
| D. | None of the mentioned |
| Answer» C. Speedo meter | |
| 11. |
Which of the following represents materials used for thickness measurement using inductive transducer? |
| A. | Material should be magnetic in nature |
| B. | Material should be magnetic and conducting |
| C. | Material should be magnetic and non-conducting |
| D. | All of the mentioned |
| Answer» E. | |
| 12. |
Which of the following is correct for toroid type coils? |
| A. | Toroid can be used for measurement of displacement |
| B. | Toroid cannot be used for measuring displacement |
| C. | Toroid can be used for measuring both displacement and velocity |
| D. | None of the mentioned |
| Answer» C. Toroid can be used for measuring both displacement and velocity | |
| 13. |
Closely wound toroid coils are better than solenoid coil. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
Push-pull coil system is used for ________________ |
| A. | Providing constant permeability |
| B. | Minimize electromagnetic force of attraction |
| C. | Provide immunity from external magnetic effect |
| D. | All of the mentioned |
| Answer» E. | |
| 15. |
Which of the following represents application of inductive transducers? |
| A. | Displacement measurement |
| B. | Thickness measurement |
| C. | Both displacement and thickness measurement |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 16. |
Which of the following represents drawback of inductive transducer for displacement measurement? |
| A. | Act of electromagnetic force of attraction |
| B. | Lower sensitivity |
| C. | Requirement of large displacement |
| D. | None of the mentioned |
| Answer» B. Lower sensitivity | |