Electrical daily capsule 16,17

at March 29, 2018 on Thursday, 29 March 2018

Capsule 17

Let's test your self


Q1-At resonance frequency of a series RLC circuit


Q2-In circuit & network theory the thevenin's equivalent source is a/an


Q3-An electric iron rated at 230v, 500watt, 50Hz. The voltage rating 230v refers to



Q4-Which one of followings is a best conductor of electricity


Q5-Semiconductors resistance decrease with



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Capsule 16

Let's test your self

Q1-Why we connects a choke in the tube light


Q2-An ideal op-amp has ___________ input impedance.



Q3-two 2000 ohm,2watt resistor connected in parallel. what is the total resistance and wattage rating


Q4-alternators are design to generate AC voltage at


Q5-Function of interpoles in a dc machine is to


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Electrical daily capsule 14,15

at March 27, 2018 on Tuesday, 27 March 2018

Capsule15
Let's test your self


Q1-which one is the unit of voltage


Q2-Candela is the unit of


Q3-why we excites the DC generator?




Q4-An ideal transformer has core of 23cm^2 and flux of 40weber then what will be its core loss

Q5-which one is the good conductor of electricity








Capsule 14
Let's test your self


Q1-Which one is the average value of an alternating current wave

Q2-The direction of induced current is given by


Q3-The unit of reluctance

Q4-In order to block the DC component of a voltage, a/an____________is connected in series with the source.


Q5-In an common emitter NPN transistor the collector current is 2.3mA & base current is 10uA then what is its current gain.



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What is voltage and current?

at March 26, 2018 on Monday, 26 March 2018

VOLTAGE

The voltage at any point is  the work done to bring a charge from zero potential to that point.
                          V=dW/dQ  j/c or volt

VOLTAGE DIFFERENCE

          It is the work done to bring a charge from one potential to another.
CURRENT 
            current is the rate of flow of charge at a cross sectional area of a conductor.
Mathematically, 
                    Current=dQ/dt
   If 1 coulomb of charge flows in 1 second then the current is said to be 1 Ampere.
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Electrical daily capsule13

at March 26, 2018

Capsule13
Let's test your self


Q1-The wire which is placed on the top of a transmission line is act as

Q2-1watt equals to

Q3-Magnetic field intensity is given by

Q4- From the followings which property is a property of an ideal voltage source

Q5-For a n-type semiconductor the doping impurities are
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Electrical daily capsule 11,12

at March 24, 2018 on Saturday, 24 March 2018

Capsule 12
Let's test your self


Q1-In hysteresis loop


Q2-Which of the following instrument has the highest torque/weight ratio


Q3- The biot-savert's law is general modification of


Q4-The commutator of a DC generator is acts as


Q5-The transformer of a welding machine is a


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SUBJECTIVE

                CHARGE:
                             It is the physical property of a matter by the virtue of which it experience a force when it placed in a magnetic field. Same pole repel each other and different pole attract each other.

Capsule 11
Let's test your self


Q1-Which of the following motor can be run on DC as well as AC


Q2-A 150v dc motor armature resistance 0.4ohm has back E.M.F of 142v. The armature current is

Q3-The current in reverse biased in P-N junction diode may be


Q4-The B-H curve is used find the mmf of this section of the magnetic circuit. this section is known as

Q5-The highest transmission AC voltage in india



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Subjective

   Biot-savart's law

                          It is a statement in electromagnetism: the magnetic intensity at any point due to a steady current in an infinitely long straight wire is directly proportional to the current and inversely proportional to the distance from point to wire.

                               If  a compass brought near to an electric wire, the compass needle changes direction. TheBiot-Savart Law is an equation that describes the magnetic field created by a current-carrying wire, and allows you to calculate its strength at various points.










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Electrical daily capsule 9,10

at March 22, 2018 on Thursday, 22 March 2018

Capsule 10
Let's test your self


Q1-230v, 15A is given to an ideal inductor at a power factor of 0.8 lagging, then what will be the power dissipation


Q2-find the true power



Q3-In a semiconductor, the resistivity depends upon


Q4-Ampere-second is the unit of


Q5-Superposition theorem requires as many circuit to be solved as there are



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Capsule 9
Let's test your self


Q1-If the batteries are connected in parallel then,_______________of the circuit increases


Q2-Which of the followings has the highest voltage gain


Q3-Zener diode is a                               


Q4-Semiconductor is a


Q5-PMMC instrument has an

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Electrical daily capsule 8

at March 21, 2018 on Wednesday, 21 March 2018

Capsule 8
Let's test your self


Unit of reactive power is


The reactance of 1 Farad capacitance when connected to a dc circuit is


fleming's left hand rule is appplicable for


The earthing electrodes should be placed within what distance in meter from the building whose installation system is being done


The power factor of an ac circuit is given by

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