171. The temperature transducers exhibit no– linear behaviour. The order in which they exhibit no linearity (highest to lowest) is

1. 1. thermocouples, RTD, thermistors

   
   
   

   2. thermistors, thermocouples, RTDs

   
   
   

   3. RTDs, thermocouples, thermistors

   
   
   

   4. Thermistors, RTDs, thermocouples

   
   
   

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   NA

   Correct Option: B

   NA

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172. Three types of temperature transducers are compared as regards their sensitivity. The order in which they exhibit their sensitivities (highest to lowest) is

1. 1. thermistors, RTDs, thermocouples

   
   
   

   2. thermocouples, RTDs, thermistors

   
   
   

   3. RTDs, thermistors, thermocouples

   
   
   

   4. RTDs, thermocouples, thermistors

   
   
   

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   NA

   Correct Option: A

   NA

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173. Thermocouples are
     

1. 1. passive transducers

   
   
   

   2. active transducers

   
   
   

   3. both (a) and (b)

   
   
   

   4. output transducers

   
   
   

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   NA

   Correct Option: B

   NA

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174. Two inductive transducers working on the principle of change of self inductance L, are connected in push pullar rangement. If the change of inductance of transducers is 6L, the change of inductance exhibited at the output terminals is

1. 1. 6L

   
   
   

   2. 2 ΔL

   
   
   

   3. ± 2 ΔL

   
   
   

   4. zero

   
   
   

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   NA

   Correct Option: D

   NA

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175. In an L.V.D.T. the two secondary windings are connected in differential to obtain

1. 1. higher output

   
   
   

   2. an output voltage which is phase sensitive i.e. the output voltage has a phase which can lead us to a conclusion whether the displacement of the core took place from right to left or from left to right

   
   
   

   3. in order to establish the null or the reference point for the displacement of the core

   
   
   

   4. both (b) and (c)

   
   
   

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   NA

   Correct Option: A

   NA

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