___________ has the best damping properties?

Related Mcqs:

1. A good electric contact material should have all of the following properties except_____________?

   A. high resistivity B. high resistance to corrosion C. good thermal conductivity D. high melting point...

2. ___________ is most commonly used for making magnetic recording tape?

   A. Silver nitrate B. Ferric oxide C. Small particles of iron D. Silicon-iron...

3. Commonly used conducting materials are_____________?

   A. copper B. aluminium C. both (A) and (B) D. copper and silver E. platinum and gold...

4. highest conductivity_____________?

   B. lowest temperature co-efficient C. good mechanical strength D. good corrosion resistance E. easy solderable and drawable quality F. all of the above...

5. An H.R.C. fuse is_______________?

   A. a ceramic body having metal and caps B. a wire of platinum C. a heavy cross-section of copper or aluminium D. a ceramic tube having carbon rod inside it...

6. In thermocouples which of the following pairs is commonly used ?

   A. Copper-constantan B. Aluminium-tin C. Silver-German silver D. Iron-steel...

7. Non-linear resistors______________?

   A. produce harmonic distortion B. follows Ohm’s law at low temperatures only C. result in non-uniform heating D. none of the above...

8. The conductivity of a metal is determined by____________?

   A. the electronic concentration and the mobility of the free electrons B. the number of valence electrons per atom C. either (A) or (B) D. none of the above...

9. Which of the following high resistance materials has the highest operating temperature ?

   A. Kanthal B. Manganin C. Nichrome D. Eureka...

10. The photo-electric effect occurs only when the incident light has more than a certain critical____________?

    A. intensity B. speed C. frequency D. wave length...