# Recent questions tagged temperature

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

Problem on temperature coefficient of resistance 3

Problem on temperature coefficient of resistance 2

Problem on temperature coefficient of resistance 1

Based on temperature withstanding ability, classify insulating material.

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

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

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

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

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

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

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

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

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

With rise in temperature the resistance of semi-conductors?

With rise in temperature the resistance of pure metals?