Electrical Engineering : Electrical Engineering Materials QUESTIONS AND ANSWERS :: part3 : 1 to 5
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.________ has the best damping properties. |
| Diamond |
| High speed steel |
| Mild steel |
| Cast iron |
2.Due to which of the following reasons copper and aluminium are not used for heating elements ? |
| Both have great tendency for oxidation |
| Both have low melting point |
| Very large length of wires will be required |
| All of the above |
3.Carbon resistors are used extensively because they are |
| easy to make |
| compact |
| inexpensive |
| all of the above reasons |
4.Which of the following materials is the best conductor of electricity ? |
| Tungsten |
| Aluminium |
| Copper |
| Carbon |
5.The photo-electric effect occurs only when the incident light has more than a certain critical |
| intensity |
| speed |
| frequency |
| wave length |
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