Dc Machines Hopkinsons Test Online Exam Quiz
Dc Machines Hopkinsons Test GK Quiz. Question and Answers related to Dc Machines Hopkinsons Test. MCQ (Multiple Choice Questions with answers about Dc Machines Hopkinsons Test
For carrying out load test on Hopkinson’s test setup _________________
Options
A : Actual load is needed
B : By changing field currents in two machines load can be changed
C : Can’t carry out
D : By changing the armature current test is carried out
Hopkinson’s test gives _______________
Options
A : Combined iron losses of two machines which can be separated
B : Combined iron losses of two machines which can’t be separated
C : Doesn’t include iron losses
D : Depends on actual setup
What will happen if field current of generator in Hopkinson’s test is increased?
Options
A : Current through motor armature will increase
B : Current through motor armature will decrease
C : Current through motor armature will remain constant
D : Motor armature current cannot be determined
What will happen if field current of motor in Hopkinson’s test is decreased?
Options
A : Current through motor armature will increase
B : Current through motor armature will decrease
C : Current through motor armature will remain constant
D : Motor armature current can’t be determined
Why field test is conducted even if Hopkinson’s test is present?
Options
A : Instability of an operation
B : Possibility of run-away speed
C : Both instability and possibility of run-away speed
D : Field test is not conducted
Hopkinson’s test of D.C. machines is conducted at _______________
Options
A : No-load
B : Part load
C : Full-load
D : Overload
Hopkinson’s test requires ____________
Options
A : One DC machine on which test is carried out
B : Two different DC machines
C : Two identical DC machines
D : Can be worked with one or two machines
In field’s test generator field and motor field are connected in ______________
Options
A : Series
B : Parallel
C : Alternatively, series and parallel
D : Not connected
In Hopkinson’s test, two machines are connected in ______________
Options
A : Series
B : Parallel
C : Can be connected in parallel or series
D : Two machines are not required
Hopkinson’s test is suitable for ______________
Options
A : Small machines only
B : Small and medium machines
C : All machines
D : Only large machines
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