Platinum is used in_____________?
Correct answer: E. all of the above
- A. electrical contacts
- B. thermocouple
- C. heating element in high temperature furnace
- D. grids of special purpose vacuum tubes
- E. all of the above
Explanation
Platinum is used for durable contacts, high-temperature thermocouples, furnace heating elements, and specialized vacuum-tube grids because it resists oxidation and retains useful properties at high temperature. Thus all the listed applications are valid.
Last updated
Practise Electronics and Devices
758 free Electronics and Devices MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1 db corresponds to_____________change in power level?
A 1,000 V power supply would use_____________ as a filter capacitor?
A 10 V power supply would use ____________ as filter capacitor?
A 2-transistor class B power amplifier is commonly called ______________ amplifier?
A 25eV electron has a speed of______________?