# A resistor in which the resistance changes exponentially with change in temperature is called as

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

A resistor in which the resistance changes exponentially with change in temperature is called as Thermistor

## Related questions

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

With rise in temperature the resistance of semi-conductors?

With rise in temperature the resistance of pure metals?

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?

Problem on temperature coefficient of resistance 3

Problem on temperature coefficient of resistance 2

Problem on temperature coefficient of resistance 1

Which of the following does not change in a transformer?  (A) Current (B) Voltage (C) Frequency (D) All of the above

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

Which of the following is NOT a non-linear resistor? A) Varistor B) Precision resistor C) NTC thermistor D) PTC thermistor

In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of?

In a 5 bit weighted resistor D/A converters, the resistor value corresponding to LSB is 40 kΩ, and the resistor value corresponding to MSB will be (A) 0.4 kΩ (B) 3 kΩ (C) 2.8 kΩ (D) 2.5 kΩ

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

An open resistor, when checked with an ohm-meter reads?

A 1000Ohm, 1 Watt resistor can safely pass a current of

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

How does AC current change direction?

what do not change in transformer?

If we change the excitation of synchronous machine will it affect on power factor?

If we change the excitation of synchronous machine will it affect on motor speed?

A diode in which the change in reverse bias voltage varies the capacitance is called as A) Varactor diode B) Switching diode C) Tunnel diode D) Zener-diode

Can a supernode contain a resistor?

Which of the following is the name given to resistance of thin films that are uniform in thickness? A) Area resistance B) Sheet resistance C) Filmy resistance D) None of these

Consider a cube of material of sides 1 cm with a resistance of 0.003 Ω between its opposite faces. What is the resistance if the same volume of the material is drawn into a length of 50 cm with a uniform cross – section? A) 0.003 Ω B) 0.15 Ω C) 7.5 Ω D) None of these

What is the resistance of a 160 m wire with a uniform diameter of 0.28 mm, if the specific resistance is 12.32 μΩ-cm? A) 3.2 Ω B) 3.2 μΩ C) 0.8 Ω D) None of these

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

What is the resistance of a coil which draws 10 A and dissipates 1520 W? A) 152 Ω B) 15.2 Ω C) 1.52 Ω D) None of these

We connected a 35V dc supply to a resistance of 600 Ohm in series with an unknown resistance R.A. voltmeter having a resistance of 1.2 kOhm is connected across 600 Ohm resistance and read 5v. The value of resistance R will be

What happens to the resistance of a wire when its length as well as the cross-sectional area are doubled? A) It doubles B) It becomes 4 times C) It becomes 2π times D) It remains the same

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

Discuss DAC architectures based on resistor ladders.

A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ohm. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is

What is the temperature sensor?

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

Define the following terms as referred to battery. a) E.M.F b) Internal resistance c) Ah efficiency d) WAh efficiency

The resistance of a conductor varies inversely as?

An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms?

What is the total resistance if 5 resistors of 20 Ω each are connected in series? A) 100 Ω B) 4 Ω C) 20 Ω D) None of these

The resistance of a few meters of wire conductor in closed electrical circuit is?