A. Prokaryotic organisms
B. Unicellular organisms
C. Fungi
D. Eu-cariotiquic organisms
2
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The size of poxvirus is_______________?
2
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No-load speed of which of the following motor will be highest ?
A. 20 nm
B. 200 nm
C. 250 nm
D. 300 nm
0
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The direction of rotation of a D.C. series motor can be changed by___________?
A. Shunt motor
B. Series motor
C. Cumulative compound motor
D. Differentiate compound motor
0
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Which of the following application requires high starting torque ?
A. interchanging supply terminals
B. interchanging field terminals
C. either of A. and B. above
D. None of the above
0
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If a D.C. motor is to be selected for conveyors, which rriotor would be preferred ?
A. Lathe machine
B. Centrifugal pump
C. Locomotive
D. Air blower
0
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Which D.C. motor will be preferred for machine tools ?
A. Series motor
B. Shunt motor
C. Differentially compound motor
D. Cumulative compound motor
0
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Differentially compound D.C. motors can find applications requiring___________?
A. Series motor
B. Shunt motor
C. Cumulative compound motor
D. Differential compound motor
0
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Which D.C. motor is preferred for elevators ?
A. high starting torque
B. low starting torque
C. variable speed
D. frequent on-off cycles
0
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According to Fleming’s left-hand rule, when the forefinger points in the direction of the field or flux, the middle finger will point in the direction of_________________?
A. Shunt motor
B. Series motor
C. Differential compound motor
D. Cumulative compound motor