Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what should be the ideal gauge of wire (In sq mm) for different loads in Ampere?

115

write down the formula of cable size in RM if current is 50Amp.

78

What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

88




my question is how to answer the question "you are from b.tech eee background and why do you want to go for banking

72

what is feeder bay?

208

What is difference between insulating medium and fault current interruption medium in a switching device.

206

What will happen if the armature resistance is in minimum position and the field resistance is in maximum position while starting the motor

Viva,

146

what is the size of ht cable of 33kv ht line and transformers ratings are 1 Mva and 5mva.please send formula also.

104




11 kv input, 66 kv input advantages

106

What is CCM in Electrical ? where can we use this material?

117

for what purpose the star point is done in ct

103

can we install LT panel & HT panel in one room?

1 234

can we install HT panel & LT panel side by side or how much clearance is required ?

114

what is resver in electrical enginnering with answer

177

surge tank, hrc fuse, earthing transformer, firm power objective type

149


Post New Electrical Engineering Questions






Un-Answered Questions { Electrical Engineering }

Actually I have a doubt on neutral and earth.we use Ac power without taking neutral by connecting to earth,but at that time does it affects on efficiency of any electrical components or no? If yes how?

215


why the rotor current becomes in steady state during high slip region? please verify with equations.

795


Draw the DOL starter and star delta starter drawing?

1658


volts=230 c=10mf a=??

744


why d.c produces corrosion

735






In electrical locomotive engines, the DC series motors is being used as traction motor. But in new engines like in WAP7 & WAG9 the 3-phase squiral cage induction motors has replaced them. So can someone tell me the advantages of induction motor over dc seris motor in engines points of view....???

1150


Difference between earthing & grounding.?

644


Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir

527


Single phase and threephase power calculation

812


when the time of backcharging the transformer three phases only enough or three phase with neutral is must.from these which one is the best one.

677


what is the calculation formula for motor starting torque,running torque, running torque.

194


Please brief me about number of pole in alternator.In single phase alternator coils are connected in star or series. How to calculate frequency for the same.

602


PAC and simple Ac different

115


HOW TO CALCULATE S/C,O/C,E/F OF ACB.

1184


In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.

945