Other Electrical Engineering Interview Questions 

Question 
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Answers 

Re: how to calculate diesel consumption of a D.G.Set?
Answer
# 1
We can not calculate the diesel comsumption...depending upon
load it will conume the diesel...suppose the 1500kva D.G is
running and the load is 1000kw means it will consume 150200
liters per hour.... 

5 
* Signal transmission in sky wave propagation is due to ?
a) Reforction of wave
b) Reflection of wave
c) Pierus through Inosphere
d) None
and Reason for this is???? 

2 
why we still use sinusoidal waveforms for transmission and
utilisation (we know generation is sinusoidal), instead of
other ac waveforms such as triangle, sawtooth, square etc.,?
is there any mathematical derivations to prove sinusoidal is
efficient than others? 

1 
Why the frequency of a system is changed if the load changes? 

4 
when generator of a power plant is not connected to grid ,
by increasing the mechanical torque speed of rotor increases
but when it's connected to load instead of increase in speed
current increases , why? 

1 
how to calculate the kw, Amps consumed by a capacitor,
give me the formula for KVAr into capacitance,KVAr into KW
& KVA, Amps 

3 
6. A DC AMMETER HAS R=0.1 OHM & CURRENT RANGE IS 0100 A IF
THE RANGE IS TO BE EXTENDED TO 0500 A THEN METER REQUIRES
SHUNT RESISTANCE OF .......... 
SSC 
2 
How will calculate the current rating (withstanding
capacity)of alumunium and copper cables? 

1 
why nutral and earthing wire connect with each other in
main panel board.?


2 
what is the working principle/operation/theory of 3phase
rectifier power transformer used in cold rolling mills. 
TATA 
1 
what is the other name of dc series motor 

2 
which of the following loss varies with the load
a)hystresis loss
b)eddy current loss
c)copper loss
d)core loss


2 

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