Electrical Engineering : Electrical Engineering Materials QUESTIONS AND ANSWERS :: part2 : 16 to 20
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.Overhead telephone wires are made of |
| aluminium |
| steel |
| ACSR conductors |
| copper |
17.In thermocouples which of the following pairs is commonly used ? |
| Copper-constantan |
| Aluminium-tin |
| Silver-German silver |
| Iron-steel |
18.Which of the following affect greatly the resistivity of electrical conductors ? |
| Composition |
| Pressure |
| Size |
| Temperature |
19.Piezoelectric materials serve as a source of _____ . |
| resonant waves |
| musical waves |
| microwaves |
| ultrasonic waves |
20.Non-linear resistors |
| produce harmonic distortion |
| follows Ohm's law at low tempera�tures only |
| result in non-uniform heating |
| none of the above |
More Electrical Engineering Materials QUESTIONS AND ANSWERS available in next pages
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