In an electric heater, the metal case is connected to__.
Armature cores are commonly made of
What is the area of the circle, if the circumference of the circle is 44cm?
What is the length of arc of the sector whose radius is 15 cm and the intended angle is 30°?
What is the formula for circumference of a circle?
______ earthing is the best form of earthing and is very cheap in cost?
The armature of d.c. generator is laminated to
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What is the area of the sector, if the diameter is 12 cm and the angle is 60°?
As compared to small scale business, large scale business require
In “SWOT” analysis, “S” stands for
What is the name called biggest chord of the circle?
In an economic growth, role of entrepreneur is to
. The overall efficiency of a d.c. generator lies in the range of:
In over compounded generator, full load terminal voltage is
Which formula is suitable for the area of a circle, whose diameter is (d)?
Which of the following is/are methods of earthing?
Entrepreneurship is also termed as…
What is the formula for area of the semi circle?
Magnetic field in a D.C. generator is produced by
A shunt generator running at 1000 r.p.m. has generated e.m.f. as 200 V. If the speed increases to 1200 r.p.m., the generated e.m.f. will be nearly
What is the formula for area of the circle?
Lap winding has parallel paths.
What is the formula for area of the segment of a circle?
In which type of d.c. machine-poles is residual magnetism necessary ?
D.C. generator generally preferred for charging automobile batteries is
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In d.c. generators, lap winding is used for
While applying Fleming’s right-hand rule to And the direction of induced e.m.f., the thumb points towards
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The function of pole shoes in the case of D.C. machine is
The insulating material used between the commutator segments is normally
How interpoles are connected in a DC generator?
In SWOT analysis which pair is helpful?
For medium manufacturing enterprises, the investment in plant and machinery lies between
. D.C. series generator is used
D. C. generator preferred for charging automobiles batteries is
A person who is associated with the starting of business is called
The armature core of a D.C. generator is usually made of
For parallel operation the D.C. generators normally preferred are
In d.c. generator, which loss varies with the load?
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What is the length of arc of a sector, whose perimeter is 64.8cm and radius is 12.4 cm?
Money invested in purchasing of raw materials, payment of wages and salaries, rental, electricity etc. comes under
Which type of relay is used in both A.C and D.C supply?
Paid form of ideas, goods and services are called
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Brushes of D.C. machines are made of
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