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