Super conduction by metals is observed in the temperature range of_________________?

Related Mcqs:

1. The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to l00°C will _________________?

   A. increase B. decrease C. remain same D. first increase and then decrease E. show unpredictable behaviour...

2. The steam temperature with increase in load in case of a boiler fitted with radiation super heater________________?

   A. increases B. decreases C. remains unaffected D. first increases and then decreases E. unpredictable...

3. Ferromagnetic alpha iron exists in temperature range of________________?

   A. below 723°C B. 770 – 910°C C. 910-1440°C D. 1400-1539°C E. above 1539°C...

4. Slow plastic defomiation of metals under a constant stress is known as________________?

   A. creep B. fatigue C. endurance D. plastic deformation E. non-plastic deformation...

5. Which one of the following metals would work-harden more quickly than the others__________________?

   A. copper B. brass C. lead D. silver E. aluminium...

6. Petrol is distilled at a temperature in range of__________________?

   A. 30 – 65°C B. 65 – 220°C C. 220-350°C D. 350-450°C E. 450-550°C...

7. In petrol engine using a fixed octane rating fuel and fixed compression ratio, super charging will_________________?

   A. increase the knocking tendency B. decrease the knocking tendency C. not affect the knocking tendency D. increase or decrease knocking tendency depending on strength and time of spark E. unpredictable...

8. With increase in load, radiant super heater has____________________?

   A. drooping characteristic B. lihear characterisstic C. rising characteristic D. flat characteristic E. none of the above...

9. The safety valve on boiler drum compared to safety valve on super heater is set at ________________?

   A. same value B. higher value C. lower value D. lower/higher depending on steam flow E. unpredicatble...

10. Austenite rs a combination of_________________?

    A. ferrite and cementite B. cementite and gamma iron C. ferrite and austenite D. ferrite and iron graphite E. pearlite and ferrite...