Skin effect occurs when a conductor carries current at_____ frequencies.

The period of a wave is

The peak value of a sine wave is 200 V. Its average value is

Temporary magnets are used in…..

Tesla is a unit of…..

The unit of relative permeability is…..

The rectifier instrument is not free from……

Which of the following are integrating instruments?

An induction meter can handle current up to……

Induction type single phase energy meters measure electric energy in……

. In a transformer the energy is conveyed from primary to secondary

The admitance of a RC circuit is 0.0024S and the supplied voltage is 10v . What is the total current ?

What is the SI unit for magnetic moment?

The no load current in a transformer is -----

Calculate the time taken by a series RL circuit having inductance of 0.6H and resistance of 30Ω to reach a steady state value.

Two coil of self inductance 3H and 5H are connected in series opposite each other. what is the equivalent inductance of the circuit, if the coefficient of coupling between the coil each 0.6?

The mathematical expression for magnetic permeability is

The potential inside a charged hollow sphere is

Two coupled coil with L1 : L2 : 0.5H having a coupling coefficient of K :0.75. The turn ratio N1/N2:?

Calculate the value of phase angle (in degree ) in series RC circuit having a resistance of 50 ohm and a capacitive reactance of 86.6 ohm , when the supply frequency of 50HZ

Determine the instantaneous value of the alternating current (in A) which is represented by i(t)=10sin(25t – 15)A,  if the value of t is 3 ?

In parallel LC circuit what will be the value of current (in A) at resonance ?

Two lamp 40w ,40v and 20w ,40v are connected parallel then what is the total resistance ?

Two lamp 40w ,40v and 20w ,40v are connected parallel then what is the total resistance ?

A circuit breaker is rated as follow 1500 MVA, 33KV, 3sec, 3ø oil circuit breaker . Determine the making current .

. Suspension type insulation the voltage across the center disk is---

Interlocking is not possible in which type of fuse

An ideal current source should have

A RLC series circuit is having resistance of 20Ω, source voltage is 100V , inductor(L)  and capacitor(C) is equal voltage drop that is 200v. Find out the total current in this circuit ?

when two wattmeter are used to measure power of a three phase balanced circuit and one wattmeter reading negative its means the angle of lag is

when a PN junction is forward bias

The magnitude of electric shock on human body depends upon

The current from the stator of alternator is taken to external circuit through

A shunt DC motor armature resistance is 1 ohm and field coil resistance is 100 ohms . Back EMF constant is 9 volt for 100 RPM . The DC supply voltage is 100 volt and it is running with a speed thousand RPM what is dc supply current?

The output of a OR gate is high if.....

A sine wave voltage is applied across a capacitor when the frequency of the voltage is increase the current through capacitor

When the direction of the force applied and the of movement of the object are direction perpendicular to each other.

RRB Group -D, 24-10-2018 (Shift-I)

The work done by the force is positive when-

RRB Group -D, 19-09-2018 (Shift-Ill)

Hydro power, what is the energy that is converted into electrical energy?

RRR ALP. & Tec. 29-08-2018(Shift-)

Ohm's law is not applicable to

If you will increase the voltage then what will happens the resistor in carbon filament lamp?

Two coil have inductance of 8mH and 16mH and a coefficient of coupling of 0.2 . When two coils are series and aiding nature. Then find out the total inductance

If resistance is 40 ohm and inductance is 3H in a R-L series circuit , then what will be the time constant of this circuit ?

Time constant of an inductive circuit

Power factor of a magnetizing components of current of a transformer is

On no load phasor diagram of a transformer the core loss component of the current remain in phase with........

The units of capacitance are

The direction of electric field due to positive charge is

Tesla is unit of

The endocrine gland regulates hormones that control metabolism and energy-related
reactions

The endocrine organ controls changes in a male's body and regulates the production of
sperm

i = 100Sin(100∏t) find the time for the current to reach 50 ampere

Sinusoidal V= 30Sinwt calculate the time required by the voltage to reach positive pick for second time and reach negative peak for the first time?

what indicate the shape of a B H (curve hysteresis) loop of material?

Why the rotor bar are mounted in a slightly skewed position in three phase motor?

Which type of light fitting design has free from glare?

Which material is coated in tungsten electrode of a fluorescent tube lamp?

In which three phase system the artificial neutral is required to measure the phase voltage?

What is the purpose of split ring in DC Generator?

Why armature resistance of a DC generator is very low

A girl whos weight is 200 N, climbs on a tree which night is 2-meter. What was the workdone by the girl after climbing the tree? (g= 10m/sec)

RRB Group -D, 12-12-2018 (Shift-IIl)

A semiconductor has ………… temperature coefficient of resistance.

The most commonly used semiconductor is ………..

A semiconductor has generally ……………… valence electrons.

The resistivity of a pure silicon is about ……………

When a pure semiconductor is heated, its resistance …………..

The strength of a semiconductor crystal comes from ……..

When a pentavalent impurity is added to a pure semiconductor, it becomes ………

Addition of pentavalent impurity to a semiconductor creates many ……..

Which of the following methods is used for laying of underground cables ?

. The wooden poles well impregnated with creosote oil or any preservative compound have life ______.

. If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the
annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the
corresponding size of conductor will be most economical. This statement is known as ______.

4. Overhead system can be designed for operation upto ______.

_____ are the conductors, which connect the consumer's terminals to the distribution

The increase in resistance per ohm per degree centrigrade rise in temperature is..

What is the commercial unit of electrical energy?

As per IE rules, the supplier is not permitted to vary the declared voltage by more than

As per IE rules, the supplier is not permitted to vary the declared frequency by more than

Fuse is the following part of a circuit

The fuse provides protection against

Fuse is to be provided on

The earth resistance of a low and medium voltage installation should not be more than

Size and quality of earth wire which is used in concealed wiring are

As per ISS, the minimum thickness of wood batten for batten wiring is

Ohm's law is not applicable to

If you will increase the voltage then what will happens the resistor in carbon filament lamp?

Two coil have inductance of 8mH and 16mH and a coefficient of coupling of 0.2 . When two coils are series and aiding nature. Then find out the total inductance

If resistance is 40 ohm and inductance is 3H in a R-L series circuit , then what will be the time constant of this circuit ?

Time constant of an inductive circuit

Power factor of a magnetizing components of current of a transformer is

On no load phasor diagram of a transformer the core loss component of the current remain in phase with........

The units of capacitance are..

The direction of electric field due to positive charge is...

There is no Spring control in

i = 100Sin(100∏t) find the time for the current to reach 50 ampere

Sinusoidal V= 30Sinwt calculate the time required by the voltage to reach positive pick for second time and reach negative peak for the first time?

what indicate the shape of a B H (curve hysteresis) loop of material?

Why the rotor bar are mounted in a slightly skewed position in three phase motor?

Which type of light fitting design has free from glare?

Why armature resistance of a DC generator is very low?