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Notations that are used in transistor circuits:-
hie = h11e = Short circuit input impedance
h0e = h22e = Open circuit output admittance
hre = h12e = Open circuit reverse voltage transfer ratio
hfe = h21e = Short circuit forward current Gain.
Electromagnetic torque The torque is given by the force on the armature winding multiplied by its radius. Force on a conductor in magnetic field B is: F=B.I.L so, T=B
Q. With suitable examples differentiate between limiting and known errors. Sol. Limiting Errors (Guarantee Errors): The accuracy and precision of an instrument depends upon
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Hall Effect is associated with (A) Conductors. (B) Semiconductors. (C) Thermistors. (D)Solders. Ans: Hall Effect is associated with semiconductors.
Q. Determine the Fourier series for the periodic wave - forms given in Figure.
What is the effect of temperature on conductivity of semiconductor? Electrical conductivity of semiconductor changes appreciably along with temperature changes. At absolute zer
Q. If a single phase motor fails to run or start slow what action to be taken. Ans: If it is not starting check the supply and test the winding if it found normal check
Give the names of four alloys along with their composition, which are used for making heater and thermocouple elements. Constantan or Eureka {(55 to 60 percent) Cu, (45 to 40 p
Discuss the feature of Pentium in brief. The Pentium is a 32-bit superscalar, CISC microprocessor. The word superscalar is used for the processor that has more than one pipeli
Design a logic circuit when to provide an output when any two or three of four switches are closed.
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