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How Power transformers are designed? (In terms of maximum efficiency at)
AnsweredRajasri Mundrathi asked 5 years ago • 
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Crawling is a phenomenon mainly associated with
AnsweredRajasri Mundrathi asked 5 years ago • 
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The event of Magnetic Blocking between the stator and the rotor teeth is called
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The armature of DC generator is laminated for
AnsweredRajasri Mundrathi asked 5 years ago • 
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The main purpose of providing tertiary winding in a 3-phase transformer
AnsweredRajasri Mundrathi asked 5 years ago • 
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Which of the following motor can operate on both type of P.F.? (lagging as well as leading)
AnsweredRajasri Mundrathi asked 5 years ago • 
770 views1 answers0 votes
In an oil filled transformer, the application of oil is for
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Which generator is good for feeding long DC transmission lines?
AnsweredRajasri Mundrathi asked 5 years ago • 
966 views1 answers0 votes
Where do we need to use a synchronous motor?
AnsweredRajasri Mundrathi asked 5 years ago • 
1085 views1 answers0 votes
Transformers are rated in kVA but not in kW because
AnsweredRajasri Mundrathi asked 5 years ago • 
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What is the role of the starter in 3-phase induction motor?
AnsweredRajasri Mundrathi asked 5 years ago • 
975 views1 answers0 votes
The synchronous machine is also called a doubly excited machine, the reason for that is
AnsweredRajasri Mundrathi asked 5 years ago • 
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Armature reaction of an unsaturated DC machine is
AnsweredRajasri Mundrathi asked 5 years ago • 
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Which of the following machine have maximum efficiency?
AnsweredRajasri Mundrathi asked 5 years ago • 
1205 views1 answers-1 votes
Which of the following connections is good for 3-phase, 4-wire system?
AnsweredRajasri Mundrathi asked 5 years ago • 
1054 views1 answers-1 votes
Open circuit test is used to find_____.
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The back emf in D.C. machine______.
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The tap changer in an electrical power transformer is provided on_____.
AnsweredRajasri Mundrathi asked 5 years ago • 
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Which is the basic thing required to produce torque in any motor?
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Maximum loss in D.C. machine is due to __________.
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1079 views1 answers0 votes
efficiency of PMSM is ____________.
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The effect of leakage flux in transformer is to__________.
AnsweredRajasri Mundrathi asked 5 years ago • 
1037 views1 answers-1 votes
What is common between induction generator and induction motor
AnsweredRajasri Mundrathi asked 5 years ago • 
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A synchronous motor is useful in industrial applications due to its property of______.
AnsweredRajasri Mundrathi asked 5 years ago • 
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why HV winding is always placed above LV windings in core type transformers?
AnsweredRajasri Mundrathi asked 5 years ago • 
1249 views1 answers0 votes
Buchholz relay is provided on the transformer to
AnsweredRajasri Mundrathi asked 5 years ago • 
1185 views1 answers0 votes
A DC generator without commutator is a
AnsweredRajasri Mundrathi asked 5 years ago • 
1328 views1 answers0 votes
The core of transformer must have
AnsweredRajasri Mundrathi asked 5 years ago • 
1284 views1 answers0 votes
For the same rating weight of D.C. machine will be_____________
AnsweredRajasri Mundrathi asked 5 years ago • 
1313 views1 answers0 votes
If the speed of D.C. shunt motor is increased, the back EMF of the machine will be____________.
AnsweredRajasri Mundrathi asked 5 years ago • 
1853 views1 answers1 votes
Find out one basic step for right electrical estimation
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728 views1 answers0 votes
Necessity of electrical estimation is
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_________ is nothing but A list of plans which is executing before the actual work.
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A list or a plan of a building providing information of number of points in each room is called as
AnsweredRajasri Mundrathi asked 5 years ago • 
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________ are the constants of the transmission lines.
AnsweredRajasri Mundrathi asked 5 years ago • 
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which-of-the-following-is-known-as-overhead-costs-or-on-costs
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________costing is a type of job costing.
AnsweredRajasri Mundrathi asked 5 years ago • 
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The usual spans with R.C.C. poles are______.
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786 views1 answers0 votes
Cost estimation includes the following expenditures
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The Most reliable estimate is_____.
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Which material is used for wiring continuous bus bar?
AnsweredRajasri Mundrathi asked 5 years ago • 
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in screwed conduit circuits, voltage levels are____.
AnsweredRajasri Mundrathi asked 5 years ago • 
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Which among these is a method of wiring?
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The value of earthing resistance(Re) for big power stations should be_____
AnsweredRajasri Mundrathi asked 5 years ago • 
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Which set of rules are to be verified in which year? (for completion of wiring on any new installation)
AnsweredRajasri Mundrathi asked 5 years ago • 
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The leakage(IL) current must not be more than ____ of maximum supply current(I)
AnsweredRajasri Mundrathi asked 5 years ago • 
746 views1 answers-2 votes
For what voltage is the H type of poles used?
AnsweredRajasri Mundrathi asked 5 years ago • 
801 views1 answers0 votes
The insulating materials should have
AnsweredRajasri Mundrathi asked 5 years ago • 
709 views1 answers0 votes
Dielectric constant of impregnated paper insulation is
AnsweredRajasri Mundrathi asked 5 years ago • 
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For low voltage cables, insulating material is_____
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What are the types of conduits available?
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Amount of charcoal_____kg and salt______kg is needed for GI Pipe earthing
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644 views1 answers0 votes
Tests are to be conducted on wiring installations, select one of following
AnsweredRajasri Mundrathi asked 5 years ago • 
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Ballast resistance & the choke connected in ______
AnsweredRajasri Mundrathi asked 5 years ago • 
822 views1 answers0 votes
For the lighting-calculations, Which method is used?
AnsweredRajasri Mundrathi asked 5 years ago • 
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Power electronics Thesis
OpenShivani asked 5 years ago • 
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Utilization-factor for an indirect-lighting scheme is_______.
AnsweredRajasri Mundrathi asked 5 years ago • 
828 views1 answers0 votes
How many earth connections are required for the motor frame as per the IE rule 61?
AnsweredRajasri Mundrathi asked 5 years ago • 
818 views1 answers0 votes
If the working voltage is 11 kV then spacing between 2-conductors is
AnsweredRajasri Mundrathi asked 5 years ago • 
730 views1 answers0 votes
Calculate the number of poles required in LT line distribution, which formula you should use?
AnsweredRajasri Mundrathi asked 5 years ago • 
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