Quiz No:54 Instruments and measurements RRB , Coal India , Engineering diploma Level , PSC , PWD

1. The readings of a dynamometer type watt­meter can be highly erratic at—

 
 
 
 

2. Which of the following cannot be measured by multi meters?

 
 
 
 

3. ……… type instrument has identical calibra­tion for A.C. as well as D.C. values.

 
 
 
 

4. ………type instrument can have full scale deflection of 300 degrees.

 
 
 
 

5. A potentiometer works on—

 
 
 
 

6. ………bridge is preferred for the measure­ment of inductance having high Q-factor.

 
 
 
 

7. A Q-meter measures—

 
 
 
 

8. A portable instrument is likely to have …… damping.

 
 
 
 

9. Hot wire instruments read—

 
 
 
 

10. In ……… instruments the deflecting torque depends on the frequency.

 
 
 
 

11. ……… is the commonly used material for thermocouples.

 
 
 
 

12. Which of the following can be measured by ‘Bolometer’?

 
 
 
 

13. ……… frequency meter can be used for the measurement of radio frequency.

 
 
 
 

14. The phenomenon of ‘creeping’ occurs in—

 
 
 
 

15. Permanent magnets used in instruments are generally made of—

 
 
 
 

16. Which of the following resistances is shown by a needle in a meggar not in operation?

 
 
 
 

17. …………bridge is used for the precise measurement of inductances over a wide range.

 
 
 
 

18. Which of the following bridges is used to measure power factor?

 
 
 
 

19. Moving parts of instruments are supported in ………… bearings.

 
 
 
 

20. A power factor meter has ……… control springs.

 
 
 
 

21. Which of the following is an analogue transducer?