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Answer :

In a transistor leakage current mainly depends on temperature.

Related questions

Description : As a transistor ages, what happens to the leakage current?

Last Answer : It tends to increase

Description : The leakage current of PN junction is caused by?

Last Answer : The leakage current of PN junction is caused by heat energy.

Last Answer : In Reverse bias of diode when the cathode is connected to positive and anode is connected to negative very small current flows this very small current is known as leakage current of diode.

Description : When you are using an ohmmeter to test a transistor for leakage, what is indicated by a low, but not shorted, reverse resistance reading?

Last Answer : A leaking transistor

Description : In the common–emitter transistor circuit, if the current gain is 100 and the collector current is 10 mA, the base current is: (1) 10 µA (2) 100 µA (3) 1 A (4) 10 A 

Last Answer : In the common–emitter transistor circuit, if the current gain is 100 and the collector current is 10 mA, the base current is: 100 µA

Description : A transistor has a typical value of β = 200 , If the collector current is 15 mA, then base current will be

Last Answer : A transistor has a typical value of β = 200 , If the collector current is 15 mA, then base current will be 0.075 mA

Last Answer : The leakage flux in a transformer depends upon load current.

Description : The set of transistor characteristics which enable α to be determined directly from the slope is (a) CB transfer characteristics (b) CE transfer characteristics (c) CB input characteristics (d) CE output characteristics

Last Answer : The common base transfer characteristics

Description : In a transistor Colpitts oscillator, C1 = 0.001 µF, C2 = 0.01 µF and L = 5 µH. The frequency of oscillation in MHz will be (a) 2.37 MHz (b) 10.00 MHz (c) 11.54 MHz (d) 9.09 MHz 

Last Answer : c

Description : Beta cut-off frequency of a transistor is the frequency at which the Beta is • 0.707 of low frequency value • Zero • Equal to low frequency value • None of the above.

Last Answer : Beta cut-off frequency of a transistor is the frequency at which the Beta is 0.707 of low frequency value

Description : If a transistor were operated with emitter and collector interchanged, then  1 .emitter current will increase  2. Collector current will increase  3. Base current will decrease  4. No current flow will take place 

Last Answer : If a transistor were operated with emitter and collector interchanged, then Collector current will increase 

Description : In a transistor  1. Emitter is heavily doped while the collector is moderately doped 2. Collector base junction is forward biased 3. Emitter is made wider than collector 4. The input resistance is much higher than output resistance 

Last Answer : In a transistor Emitter is heavily doped while the collector is moderately doped

Description : In an npn transistor, _____ are the minority carriers.   (a) Free electrons (b) Acceptor ions (c) Donor ions (d) Holes

Last Answer : In an npn transistor, Holes are the minority carriers.

Description : A transistor has ________ number of terminals. (A) 2 (B) 3 (C) 1 (D) 4 

Last Answer : A transistor has 3 number of terminals. 

Description : ICB0 in a transistor can be reduced by reducing:  (1) IB (2) VCC (3) IE (4) Temperature

Last Answer : ICB0 in a transistor can be reduced by reducing: Temperature.

Last Answer : A Transistor has Two PN junctions

Last Answer :  The most commonly used transistor circuit arrangement Common emitter

Last Answer : The function of Transistor is to do Amplification

Last Answer : A FET is a Bi-polar transistor

Last Answer : The encapsulation of transistor is necessary for mechanical ruggedness.

Last Answer : When a transistor is connected in common emitter mode, it with have medium input resistance and high output resistance.

Description : What is the main use of a transistor?

Last Answer : Main use of a transistor as amplifier and as switch.

Description : can transistor amplify dc?

Last Answer : No

Description : Key point for its proper functioning of base region in a transistor depends upon the thickness of the base Why ?

Last Answer : Base region in a transistor controls the current. The majority charge carriers supplied by the emitter do not combine in the same region due to its thin size and light doping and most of them pass on to the collector. This is the key point for its proper functioning.

Description : The leakage current in the transmission lines is referred to as the a) Resistance b) Radiation c) Conductance d) Polarisation

Last Answer : Ans: C

Description : An electrical connection between the wiring of an electric motor and its metal frame is known as a/an _____________. A. eddy current B. ground C. impedance D. flux leakage

Last Answer : Answer: B

Description : One of the generator or motor bearings is generally insulated from the end housing in order to prevent ________. A. rapid brush wear B. current leakage from the shaft C. excessive field winding heat D. circulation of shaft currents induced in the machine's frame

Last Answer : Answer: D

Description : When a megohmmeter is used to test the insulation of a large motor, the initial dip of the pointer toward 'zero' is caused by ____________. A. good insulation B. the capacitance of the ... of the current along the surface of dirty insulation D. the dielectric-absorption effect of the insulation

Last Answer : Answer: B

Description : When a megohmmeter is being used to test insulation resistance, current leakage along the surface of the insulation is indicated by the megohmmeter pointer _____________. A. fluctuating around a ... slightly downscale as voltage is applied D. continually rising as the test voltage is applied

Last Answer : Answer: C

Description : When using a megohmmeter to test the dielectric strength of wire insulation, a continuous series of slight downscale kicks by the pointer is result of ____________. A. good insulation B. the ... dirty insulation C. the capacitance of the windings D. the dielectric-absorption effect of the insulation

Last Answer : Answer: B

Description : When a megohmmeter is used to test the dielectric strength of wire insulation, the initial dip of the pointer toward 'zero' is caused by _____________. A. good insulation B. the leakage of ... of dirty insulation C. the capacitance of the circuit D. the dielectric absorption effect of the insulation

Last Answer : Answer: C

Description : When a megohmmeter is being used to test insulation resistance, current leakage along the surface of the insulation is indicated by the megohmmeter's pointer _____________. A. dipping toward ... kicking slightly down scale as voltage is applied D. fluctuating around a constant resistance reading

Last Answer : Answer: C

Description : You are testing the insulation in an AC generator with a megohmeter. The resistance value of a dry, clean winding will ____________. A. continue to rise as the test potential is maintained, ... fairly steady after 5 to 7 minutes D. stabilize after approximately 2 to 4 minutes of fluctuation

Last Answer : Answer: A

Description : When you are making a high potential test on a piece of repaired electrical machinery, a rise in leakage current indicates ____________. A. good insulation B. bad insulation C. high insulation power factor D. a high slot discharge factor

Last Answer : Answer: B

Description : When a megohmmeter is used to test insulation, the gradual rise of the pointer reading as a result of continued cranking, is caused by _____________. A. good conductor resistance B. the ... insulation C. the inductive reactance of the windings D. the dielectric-absorption effect of the insulation

Last Answer : Answer: D

Description : The use of four diodes, in a full-wave bridge rectifier circuit, will __________. A. provide unidirectional current to the load B. allow a very high leakage current from the load C. convert direct current to alternating current D. offer high opposition to current in two directions

Last Answer : Answer: A

Description : How do you measure the leakage current in a house wiring?

Last Answer : There are two ways for it. First one is to keep all lights and other domestic electric appliances OFF for an hour and record the energy consumption in the energy meter. Calculate current from it. Second way is by measuring the current in the house earth conductor as leakage current goes to earth.

Description : What is the purpose of HV / leakage current test on stator?  

Last Answer : This is to find out weakness in the stator winding. If the ambient conditions are right, and the insulation is weak, the leakage current will increase non-linearly.  The record of voltage ... current. In HV test starting leakage current should be more than switching off current in μ Amps. 

Description : Insulators perform which of the following functions? a) Conduction b) Convection c) Provide electrical insulation d) Allows current leakage at interfaces

Last Answer : c) Provide electrical insulation

Description : The records of exports and imports in goods and services and transfer payments is known as a) Current account b) Budget surplus c) Economic leakage d) degree of openness

Last Answer : a) Current account

Description : A cable carrying alternating current has (a) hysteresis losses only (b) hysteresis and leakage losses only (c) hysteresis, leakage and copper losses only (d) hysteresis, leakage, copper and friction losses

Last Answer : (b) hysteresis and leakage losses only

Description : In a reverse biased PN-junction, which current carriers cause leakage current?

Last Answer : The minority carriers

Description : Describe the leakage current in a transmission line and in what unit it is expressed.

Last Answer : The small amount of current that flows through the dielectric between two wires of a transmission line and is expressed in micro ohms per unit length.

Description : The leakage current that flows through a photodiode with no light input ∙ A. dark voltage ∙ B. dark impedance ∙ C. dark power ∙ D. dark current

Last Answer : D. dark current

Description : Dark current in light detectors is caused by ∙ a. Thermally generated carriers in the diode ∙ b. The absence of light input ∙ c. Small leakage current ∙ d. Its imperfection

Last Answer : a. Thermally generated carriers in the diode

Description : In a PIN diode, leakage current in the absence of light is called: a. baseline current b. zero-point current c. dark current d. E-H current

Last Answer : c. dark current

Description : Silicon transistors are preferred because: (a) High operating temperature (b) Low leakage current (c) Suited to high frequency circuits (d) All

Last Answer : (d) All

Description : 27] In a transformer, the leakage flux of each winding is proportional to the current in that winding because A. Ohm's law applies to magnetic circuits B. Leakage paths do no saturate C. the two windings are electrically isolated D. mutual flux is confined to the core

Last Answer : B. Leakage path do not saturate

Description : The slot leakage can be calculated by making which of the following assumptions ? (a) The current in the slot conductors is uniformly distributed over their cross-section (b) The leakage path is straight ... is only considered. The reluctance of iron paths is assumed as zero (d) All of the above

Last Answer : (d) All of the above

Description : The leakage current must not be more than ____________ of maximum supply current

Last Answer : The leakage current must not be more than 1 / 5000 of maximum supply current