Related Questions

If Bashar can run around a ground four times in 20 minutes and Rahim can run around the same ground three times in 12 minutes, who can run around that ground more times in an hour, and how many times more can he run around ?
A Bashar, three times more
B Rahim , three times more
C They both go around 12 times
D Bashar, eight times more
When two D.C. series generators are running in parallel, an equalizer bar is used
A To increase the speed and hence generated e.m.f.
B To increase the series flux
C So that two similar machines will pass approximately equal currents to the load
D To reduce the combined effect of armature reaction of both machines
When two D.C. generators are running in parallel an equalizer bar is used
A To increase the series flux
B To increase the generated e.m.f.
C To reduce the combined effect of armature reaction of both the machines
D So that the two identical machines will pass approximately equal currents to the load
Which of the following generators will be preferred if they are required to be run in parallel?
A Shunt generators
B Series generators
C Compound generators
D None of the above
Roni is running on the ground who has been running a business for a year and his is a running business. What are the differences among the underlined words respectively?
A Finite Verb, Infinite Verb, continous
B Transitive, Intransitive, Gerund
C Transitive, Intransitive, Adjective
D Present Continuous, Perfect Continuous, Gerund
A pilot exciter is provided on generators for which of the following reasons ?
A To excite the poles of main exciter
B To provide requisite starting torque to main exciter
C To provide requisite starting torque to generator
D None of the above
If the field of a D.C. shunt motor gets opened while motor is running
A The speed of motor will be reduced %
B The armature current will reduce
C The motor will attain dangerously high speed 1
D The motor will continue to run at constant speed
A synchronous motor is running on a load with normal excitation. Now if the load on the motor is increased
A power factor as well as armature current will decrease
B power factor as well as armature current will increase
C power factor will increase but armature current will decrease
D power factor will decrease and armature current will increase
One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven
A Runs as a generator
B Does not run as a generator
C Also runs as a motor comes to stop after sometime
D None of these
The essential condition for parallel operation of two D.C. generators is that they have
A Same kW rating
B The same operation r.p.m.
C The same drooping voltage characteristics
D Same percentage regulation

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