Related Questions

In a D.C. generator the critical resistance refers to the resistance of
A Brushes
B Field
C Armature
D Load
A policy taken with critical illness rider benefit is being assigned. Which type of assignment would suit the intended purpose because if the life insured is diagnosed with a critical illness, he only should receive the critical illness rider claim?
A Absolute assignment
B Conditional assignment
C Loan assignment
D Collateral assignment
In a D.C. generator the critical resistance can be increased by
A Increasing its field resistance
B Decreasing its field resistance
C Increasing its speed
D Decreasing its speed
The e.m.f. generated by a shunt wound D.C. generator is E. Now while pole flux remains constant, if the speed of the generator is doubled, the e.m.f. generated will be
A $$\frac{{\text{E}}}{2}$$
B 2E
C Slightly less than E
D E
A separately excited generator as compared to a self-excited generator
A Is amenable to better voltage control
B Is more stable
C Has exciting current independent of load current
D Has all above features
Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator?
A Dummy coils
B Commutator
C Eye bolt
D Equalizer rings
The losses occurring in a D.C. generator are given below. Which loss is likely to have highest proportion at rated load of the generator?
A Hysteresis loss
B Field copper loss
C Armature copper loss
D Eddy current loss
When the load resistance equals the generator resistance which of the following will be maximum ?
A Current
B Efficiency of the circuit
C Power in the load resistance
D Voltage across the load resistance
A relationship between processes such that each has some part (critical section) which must not be executed while the critical section of another is being executed, is known as
A semaphore
B mutual exclusion
C multiprogramming
D multitasking
E None of the above
__________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.
A Mach
B Reynolds
C Froude
D Weber

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