Related Questions

While conducting short-circuit test on a transformer the following side is short circuited
A High voltage side
B Low voltage side
C Primary side
D Secondary side
In deriving ac equivalent circuit for an amplifier circuit we short circuit
A All resistors
B All transistors
C All inductors
D All capacitors
A laminated iron core has reduced eddy-current losses because
A More wire can be used with less D.C. resistance in coil
B The laminations are insulated from each other
C The magnetic flux is concentrated in the air gap of the core
D The laminations are stacked vertically
The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as
A Cementation process
B Crucible process
C Bessemer process
D Open hearth process
With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.
A Increases
B Decreases
C Remains same
D Increases linearly
A firm under perfect competition will be making minimum losses (in the short run) at a point where
A MC>MR
B MR>MC
C MC=MR
D AC=AR
Which is the main reducing agent during production of iron from iron ore in a blast furnace?
A C
B CO
C CO2
D H2
Short circuit test on transformers is conducted to determine
A hysteresis losses
B copper losses
C core losses
D eddy current losses
The duration of sudden short-circuit test on a synchronous motor is usually about
A one hour
B one minute
C one second
D none of the above
Short-circuit test on an induction motor cannot be used to determine
A Windage losses
B Copper losses
C Transformation ratio
D Power scale of circle diagram

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