Q. For a DC series generator what is the condition for self-excitation?

View solution

Q. External characteristic differ from internal characteristic in DC series motor by ______

View solution

Q. When two DC series motors are connected in parallel, the resultant speed is __________

View solution

Q. While running two compound motors in parallel, we connect equalizer ring between ___________

View solution

Q. When two compound generators are connected in parallel, when load current in generator 1 is increased __________

View solution

Q. For a parallel operation of 2 DC shunt generators, we get net external characteristics ___________

View solution

Q. Load sharing of two generators connected in parallel is determined by __________

View solution

Q. We connect two generators in parallel _____________

View solution

Q. While connecting two DC generators in parallel, which of the following is not a desirable condition?

View solution

Q. For connecting two generators in parallel, they should have __________________

View solution

Q. For a given compound DC machine, Net field current obtained from characteristic is equal to 7.5 A, where shunt field current is equal to 5 A, armature current is 505 A, demagnetizing current equal to 0.95 A and shunt field winding of 1000 turns at rated speed of 1000 rpm. What will be the series field turns?

View solution

Q. From magnetization characteristic at If = 7.1 A, Eₐ = 225 V at 1000 rpm. What will be the terminal voltage at speed 950 rpm?

View solution

Q. External characteristics of DC shunt motor lies in ______________

View solution

Q. How demagnetization effect of armature reaction is shown graphically?

View solution

Q. For determining IₐRₐ maximum _____________

View solution

Q. How armature resistance effect is shown graphically?

View solution

Q. Rf line intersects with OCC in ________

View solution

Q. No load point of DC generator is __________

View solution

Q. For a given DC series generator with critical resistance equal to 100 Ω, armature resistance is equal to 50 Ω, and series field resistance is equal to 20 Ω, is connected across load of 50 Ω. What will be the load voltage?

View solution

Q. For series DC generator, internal/external characteristic start from ____________

View solution