Related Questions

The angle between the direction of star and the direction of earth's axis of rotation is called
A Co-declination
B Co-latitude
C Declination
D Latitude
What height must a satellite be placed above the surface of the earth in order for its rotation to be equal to earth’s rotation?
A 26,426.4 miles
B 27,426.4 miles
C 23,426.4 miles
D 22,426.4 miles
According to Fleming's right-hand rule for finding the direction of induced e.m.f., when middle finger points in the direction of induced e.m.f., forefinger will point in the direction of
A Motion of conductor
B Lines of force
C Either of the above
D None of the above
The direction of rotation of earth on its axis is-
A East to west
B west to east
C North to south
D South to North
If the earth's direction of rotation is reversed, what would be the IST when it is noon at the International Date Line?
A 06.30 hrs
B 05.30 hrs
C 18.30 hrs
D 17.30 hrs
In a two phasor servomotor, the direction of rotation of the rotating field depends on
A Magnitudes of voltages applied to the two stator windings
B Phase relation of voltages applied to the two stator windings
C Both magnitude and phase relationship of voltages applied to the two stator windings
D None of the above
Which of the following law/rule can he used to determine the direction of rotation of D.C. motor?
A Lenz
B Faraday
C Coulomb’s law
D Fleming
The direction of rotation of a D.C. series motor can be changed by
A Interchanging supply terminals
B Interchanging field terminals
C Either of (A) and (B) above
D None of the above
The direction of rotation of an hysteresis motor is determined by
A interchanging the supply leads
B position of shaded pole with respect to main pole
C retentivity of the rotor material
D none of these
To reverse the direction of rotation of acapacitor start motor while it is running we should
A disconnect motor from the supply till it stops then reconnect it to supply with reversed connection of main or auxiliary winding
B disconnect motor from supply and immediately reconnect it to supply with reversed con-nections of the main winding
C reverse the direction of connection of the auxiliary winding and after motor comes to rest then connect auxiliary winding to the supply
D reverse the direction of connections of the auxiliary winding and immediately connect it to supply

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