Recent questions tagged temperature

0 answers 18 views

Which is more temperature stable, a carbon-composition or a metal-film resistor? 

asked Jul 2 by Shimroz123
1 answer 10 views

Problem on temperature coefficient of resistance 3

asked May 20 by Shimroz123
1 answer 10 views

Problem on temperature coefficient of resistance 2

asked May 20 by Shimroz123
1 answer 13 views

Problem on temperature coefficient of resistance 1

asked May 19 by Shimroz123
1 answer 9 views

Based on temperature withstanding ability, classify insulating material. 

asked Sep 4, 2018 by Shimroz123
1 answer 68 views

In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room temperature is: A) Half the total number of electrons in the crystal B) Zero C) Half the number of atoms in the crystal D) Half the number of free electrons in the crystal

asked Jun 18, 2018 in Semiconductor by Shimroz123
1 answer 71 views

 A resistor in which the resistance changes exponentially with change in temperature is called as A) Potentiometer B) Phototransistor C) Varactor D) Thermistor 

asked Jun 18, 2018 in Electrical Engineering by Shimroz123
1 answer 60 views

A certain power MOSFET has a maximum junction temperature specification of 1500o C, a junction-to-case thermal resistance of 1.00 C/W, and a junction-to ambient thermal resistance of 600 C/W. If the ambient temperature is 300o C, then the maximum allowable power dissipation in the device will be A) 1.52 W B) 1.72 W C) 1.92W D) 2.00 W

asked Jun 18, 2018 in MOSFET by Shimroz123
1 answer 21 views

The arc temperature in Oil Circuit Breaker may reach up to_______.  (A) 5,000° K (B) 8,000° K (C) 10,000° K (D) None of the above

asked May 8, 2018 in Switchgear And Protection by Shimroz123
1 answer 25 views

A _________ is used to measure the stator % winding temperature of the generator.  (A) Thermocouple (B) Pyrometer (C) Resistance thermometer (D) Thermometer

asked May 8, 2018 in Electrical Machine by Shimroz123
1 answer 18 views

Which of the following has nearly zero temperature coefficient? A) Constantan B) Manganin C) Both A and B D) None of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 16 views

The transducer with negative temperature co-efficient of resistance is (A) Thermistor (B) Resistance Thermometer (C) Strain Gauge (D) Thermocouple

asked Apr 25, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 43 views

Temperature co-efficient of resistance is expressed in terms of?

asked Mar 25, 2018 in Basic concepts by Shimroz123
2 answers 29 views

The hot resistance of the bulb's filament is higher than its cold resistance because the temperature co-efficient of the filament is?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 73 views

With rise in temperature the resistance of semi-conductors?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 12 views

With rise in temperature the resistance of pure metals?

asked Mar 25, 2018 in Basic concepts by Shimroz123
1 answer 11 views

If a transformer is continuously operated the maximum temperature rise will occur in?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 60 views

What is the temperature sensor?

asked Mar 11, 2018 in Transducers and sensors by Quiz
0 answers 15 views

Explain the characteristics of inductor to be considered while designing it. What is the effect of over current and increase in temperature on inductor.

asked Mar 10, 2018 in Power Electronics by Quiz
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