MCQOPTIONS
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MCQOPTIONS
This section includes 70 Mcqs, each offering curated multiple-choice questions to sharpen your Ic Engine knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
_____________ is the complex impedance presented to the output terminals of a transducer by the associated circuitry or load. |
| A. | Lead impedance |
| B. | Capsule |
| C. | Intermittent rating |
| D. | None of the mentioned |
| Answer» B. Capsule | |
| 2. |
_____________ is the rating applicable to a specified operation over a stated number of time intervals of a specified duration. |
| A. | Dead band |
| B. | Capsule |
| C. | Intermittent rating |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 3. |
_____________ is a pressure sensing element consisting of two corrugated metallic diaphragms joined along their circumference. |
| A. | Dead band |
| B. | Capsule |
| C. | Diaphragm |
| D. | None of the mentioned |
| Answer» C. Diaphragm | |
| 4. |
A pressure sensing element consisting of a twisted or curved tube of non-circular cross-section which tends to get straightened on the application of internal pressure is the ____________ |
| A. | bellows |
| B. | best fit straight line |
| C. | bourdon tube |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 5. |
A mechanical element generally cylindrical shape with cylindrical walls having deep convolutions are the ____________ |
| A. | bellows |
| B. | best fit straight line |
| C. | ambient condition |
| D. | none of the mentioned |
| Answer» B. best fit straight line | |
| 6. |
A line midway between two parallel straight lines close together and enclosing all output versus measurand values, on a calibration curve is termed as ______________ |
| A. | analog signal |
| B. | best fit straight line |
| C. | ambient condition |
| D. | none of the mentioned |
| Answer» C. ambient condition | |
| 7. |
The conditions of the medium surrounding the measuring device is called ______________ |
| A. | analog signal |
| B. | instability |
| C. | ambient condition |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 8. |
Temperature is 300K. Convert it into ℉. |
| A. | 47°F |
| B. | 80.6°F |
| C. | 27°F |
| D. | 16.6°F |
| Answer» C. 27°F | |
| 9. |
Why is mercury used in thermometers? |
| A. | It volume is proportional to square of increase of temperature |
| B. | It shows linear variation in volume with temperature |
| C. | Its volume remains constant with temperature |
| D. | Its volume decreases with increase in temperature |
| Answer» C. Its volume remains constant with temperature | |
| 10. |
What is the slope of line drawn for a graph between temperature in °C & °F? |
| A. | 1.8 |
| B. | 5/9 |
| C. | slope is variable |
| D. | 2 |
| Answer» B. 5/9 | |
| 11. |
Temperature is absolute. True or False? |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
PCG amplifiers usually have gain compensation circuits to increase the amplification of high frequency signals, which are usually of low intensity. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Acoustic sensor principal sensing component is made up of which polymer? |
| A. | PEO(Poly-ethylene oxide) |
| B. | PET(Poly-ethylene tetraphthalate) |
| C. | PVDF(Poly-vinylidene fluoride) |
| D. | PS(Poly-styren |
| E. | PET(Poly-ethylene tetraphthalate)c) PVDF(Poly-vinylidene fluoride)d) PS(Poly-styrene) |
| Answer» D. PS(Poly-styren | |
| 14. |
Who described the new acoustic sensor? |
| A. | Golden et al |
| B. | Rijn et al |
| C. | Levkov et al |
| D. | Kassal et al |
| Answer» E. | |
| 15. |
What is the thickness of the new acoustic sensor? |
| A. | 0.25 mm |
| B. | 0.5 mm |
| C. | 1.0 mm |
| D. | 1.5 mm |
| Answer» D. 1.5 mm | |
| 16. |
What is the frequency range of sound produced at the closure of aortic and pulmonic valves? |
| A. | less than 0 Hz |
| B. | 0 to 30 Hz |
| C. | 30 to 100 Hz |
| D. | above 100 Hz |
| Answer» E. | |
| 17. |
Which of the following microphone is used for recording phonocardiograms? |
| A. | Contact Microphone |
| B. | Shotgun Microphone |
| C. | Handheld Microphone |
| D. | Lapel Microphone |
| Answer» B. Shotgun Microphone | |
| 18. |
What is the frequency range of sound generated from the closure of the mitral and tricuspid valve? |
| A. | 0 to 30 Hz |
| B. | 30 to 100 Hz |
| C. | 100 to 1000 Hz |
| D. | above 1000 Hz |
| Answer» C. 100 to 1000 Hz | |
| 19. |
Which of the following instrument is used for recording the sounds connected with the pumping action of the heart? |
| A. | ECG |
| B. | VCG |
| C. | PCG |
| D. | EEG |
| Answer» D. EEG | |
| 20. |
Vectorcardiogram displays the electrical events in __________ perpendicular axes. |
| A. | one |
| B. | two |
| C. | three |
| D. | four |
| Answer» C. three | |
| 21. |
Which of the following is the technique of analyzing the electrical activity of the heart by obtaining ECG’s? |
| A. | VCG |
| B. | EEG |
| C. | EMG |
| D. | PCG |
| Answer» B. EEG | |
| 22. |
_______ converts change in temperatures of its metallic junction to electrical voltage. |
| A. | Thermocouple |
| B. | Actuator |
| C. | Thermistor |
| D. | Electrometer |
| Answer» B. Actuator | |
| 23. |
A device for measuring temperature with negative temperature coefficient? |
| A. | Strain gauge |
| B. | Thermistor |
| C. | RTD |
| D. | Thermocouple |
| Answer» C. RTD | |
| 24. |
Direction: Question consists of two statements, one labeled as the 'Assertion (A)' and the other as 'Reason (R)'. Examine these two statements carefully and select the answer to this question using the codes given below:Assertion (A): A thermocouple is an active component.Reason (R): It is activated by a temperature gradient. |
| A. | Both A and R are individually true and R is the correct explanation of A |
| B. | Both A and R are individually true but R is not the correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» B. Both A and R are individually true but R is not the correct explanation of A | |
| 25. |
A thermocouple has low response time when |
| A. | bare used |
| B. | thin sheathed used |
| C. | Both (1) and (2) |
| D. | None of the above |
| Answer» D. None of the above | |
| 26. |
For which one of the following measurements a thermistor can be used? |
| A. | Velocity |
| B. | Humidity |
| C. | Displacement |
| D. | Percent of CO2 in air |
| Answer» E. | |
| 27. |
A temperature sensing device can be modelled as a first order system with a time constant of 6 s It is suddenly subject to a step input of 25°C – 150°C. the indicated temperature in 10 s after the process has started will be |
| A. | 118.2° C |
| B. | 126.4° C |
| C. | 134.6° C |
| D. | 142.8° C |
| Answer» C. 134.6° C | |
| 28. |
Directions: It consists of two statements one labeled as statement I and the other as statement II. Examine these two statements carefully and select the correct answer using the code given below.Statement I: A thermocouple transducer is based on Seebeck effect.Statement II: In a thermocouple transducer used for temperature measurement, the cold junction is usually kept in ice bath. |
| A. | Both statements 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. | Statements I is true but statement II is false |
| D. | Statement I is false but statement II is true |
| Answer» C. Statements I is true but statement II is false | |
| 29. |
A thermocouple having an internal resistance of 40 Ω and lead resistance of 10 Ω produces a voltage of 100 mV. If the output is read by a voltmeter having an internal resistance of 150 Ω, what will be the voltage indicated by the voltmeter? |
| A. | 55.5 mV |
| B. | 100 mV |
| C. | 75 mV |
| D. | 66.6 mV |
| Answer» D. 66.6 mV | |
| 30. |
______ is a type of resistor whose electrical resistance varies with changes in temperature. |
| A. | Thermistor |
| B. | Inductor |
| C. | Geostat |
| D. | Capacitor |
| Answer» B. Inductor | |
| 31. |
Normally which of the following has a negative temperature coefficient? |
| A. | Thermistor |
| B. | Nickel |
| C. | Copper |
| D. | Platinum |
| Answer» B. Nickel | |
| 32. |
A platinum thermometer has a resistance of 100 Ω at 25°C. The resistance at 65°C for its resistance temperature coefficient of 0.00392/°C will be nearly |
| A. | 107.3 Ω |
| B. | 115.7 Ω |
| C. | 123.3 Ω |
| D. | 131.7 Ω |
| Answer» C. 123.3 Ω | |
| 33. |
Directions: It consists of two statements, one labelled as the ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items using the codes given below:Statement (I):Platinum resistance thermometers are widely used for temperature measurements for variety of industrial applications.Statement (II):Platinum resistance thermometers provide the highest temperature sensitivity as compared to all known temperature transducers. |
| 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» B. Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I) | |
| 34. |
A J-type thermocouple has an output voltage Vθ = (13650 + 50 θx) μV, where θx is the junction temperature in Celsius (°C). The thermocouple is used with reference junction compensation, as shown in the figure. The Instrumentation amplifier used has a gain G = 20. If θRef is 1 °C, for an input θx of 100 °C, the output Vo of the instrumentation amplifier in millivolt is |
| A. | 98 mV |
| B. | 99 mV |
| C. | 100 mV |
| D. | 101 mV |
| Answer» C. 100 mV | |
| 35. |
A Hall effect transducer is generally used for the measurement of |
| A. | power |
| B. | current |
| C. | displacement |
| D. | voltage |
| Answer» D. voltage | |
| 36. |
__________ is used for temperature measurement. |
| A. | Thermocouple |
| B. | Venturimeter |
| C. | Manometer |
| D. | Rotameter |
| Answer» B. Venturimeter | |
| 37. |
A platinum RTD has a resistance of 100 ohms at 100°C. If the temperature coefficient is 0.004 / °C, what would be the change in resistance if the temperature rise is 50 °C? |
| A. | 10 Ω |
| B. | 15 Ω |
| C. | 20 Ω |
| D. | 25 Ω |
| Answer» D. 25 Ω | |
| 38. |
If a circuit is formed consisting of two dissimilar metallic conductors, and if one of the junctions has a temperature of T1 and the other is at higher temperature T2, a current flow in the circuit. This effect is called as |
| A. | Peltier Effect |
| B. | Thompson Effect |
| C. | Seebeck Effect |
| D. | Ferranti Effect |
| Answer» D. Ferranti Effect | |
| 39. |
Consider the following statements regarding Thermistor1. It has a high sensitivity2. It has a linear relationship with temperature 3. It is a resistive device.4. It can be used as a time-delay device.Which of the above statements are correct ? |
| A. | 1, 2, 3 and 4 |
| B. | 2, 3 and 4 only |
| C. | 1, 3 and 4 only |
| D. | 1, 2 and 3 only |
| Answer» D. 1, 2 and 3 only | |
| 40. |
Match List-I with List-II and select the correct answer using the code given below the lists:List-IList-II a. Cavity wave meter i. Impedance b. VSWR meter ii. Frequency measurements c. Bolometer iii. Antenna measurements d. Fraunhofer region iv. Microwave power measurements |
| A. | a - iii, b - i, c - iv, d - ii |
| B. | a - ii, b - i, c - iv, d - iii |
| C. | a - iii, b - iv, c - i, d - ii |
| D. | a - ii, b - iv, c - i, d - iii |
| Answer» C. a - iii, b - iv, c - i, d - ii | |
| 41. |
A ________ in the electric kettle can turn itself on and off when required without troubling you, even when you are away. It is not just cost-saving, also something that would help you do your bit towards energy conservation. |
| A. | programmable thermostat |
| B. | programmable watch |
| C. | programmable speaker |
| D. | programmable radio |
| Answer» B. programmable watch | |
| 42. |
Microwave power measuring devices which generate a voltage on the absorption of microwave power are called |
| A. | thermocouples and crystals |
| B. | crystals |
| C. | thermocouples |
| D. | none of the above |
| Answer» B. crystals | |
| 43. |
Cold junction in a thermocouple is |
| A. | the reference junction maintained at a known constant temperature |
| B. | the junction maintained at a very low temperature |
| C. | the junction at which the temperature is sensed |
| D. | None of the above |
| Answer» B. the junction maintained at a very low temperature | |
| 44. |
Consider the following statements:The causes of error in the measurement of temperature using a thermistor are1. Self heating2. Poor sensitivity3. Non-linear characteristicsWhich of these statements are correct? |
| A. | 1, 2 and 3 |
| B. | 1 and 2 only |
| C. | 2 and 3 only |
| D. | 1 and 3 only |
| Answer» E. | |
| 45. |
_________ is a temperature sensitive resistor, whose resistance decreases with increasing temperature. |
| A. | Proximity sensor |
| B. | Copper wire sensor |
| C. | Gold leaf sensor |
| D. | Thermistor |
| Answer» E. | |
| 46. |
Optical pyrometer is generally used to measure |
| A. | Low pressure |
| B. | Low temperature |
| C. | High temperature |
| D. | High pressure |
| Answer» D. High pressure | |
| 47. |
WHICH_OF_THE_FOLLOWING_MICROPHONE_IS_USED_FOR_RECORDING_PHONOCARDIOGRAMS??$ |
| A. | Contact Microphone |
| B. | Shotgun Microphone |
| C. | Handheld Microphone |
| D. | Lapel Microphone |
| Answer» B. Shotgun Microphone | |
| 48. |
______________IS_THE_RATING_APPLICABLE_TO_A_SPECIFIED_TO_A_SPECIFIED_OPERATION_OVER_A_STATED_NUMBER_OF_TIME_INTERVALS_OF_SPECIFIED_DURATION.?$ |
| A. | Dead band |
| B. | Capsule |
| C. | Intermittent rating |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 49. |
What is the thickness of new acoustic sensor?$ |
| A. | 0.25 mm |
| B. | 0.5 mm |
| C. | 1.0 mm |
| D. | 1.5 mm |
| Answer» D. 1.5 mm | |
| 50. |
What_is_the_frequency_range_of_sound_produced_at_the_closure_of_aortic_and_pulmonic_valves?$ |
| A. | less than 0 Hz |
| B. | 0 to 30 Hz |
| C. | 30 to 100 Hz |
| D. | above 100 Hz |
| Answer» E. | |