Related Questions

When two computers communicate with each other, they send information back and forth. If they are separated by a reasonable distance, they can send and receive the information through a direct cable connection which is called a null-modem connection. Presently what is the maximum distance in metres permitted in this null-modem connection?
A 80
B 100
C 30
D 150
E None of the above
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 repulsion motor direction of rotation of motor
A Is opposite to that of brush shift
B Is the same as that of brush shift
C Is independent of brush shift
D None
In case of a shaded pole motor the direction of rotation of the motor is
A from main pole to shaded pole
B from shaded pole to main pole
C either of the above depending on voltage
D either of the above depending on power factor
In case one phase of a three-phase synchronous motor is short-circuited the motor will
A Not start
B Run at $$\frac{2}{3}$$ of synchronous speed
C Run with excessive vibrations
D Take less than the rated load
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
In a split phase motor
A the starting winding is connected through a centrifugal switch
B the running winding is connected through a centrifugal switch
C both starting and running windings are connected through a centrifugal switch
D centrifugal switch is used to control supply voltage
In a split phase motor, the running winding should have
A high resistance and low inductance
B low resistance and high inductance
C high resistance as well as high inductance
D low resistance as well as low inductiance
In split-phase motor auxiliary winding is of
A thick wire placed at the bottom of the slots
B thick wire placed at the top of the slots
C thin wire placed at the top of the slots
D thin wire placed at the bottom of the slots

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