Electrical Daily Quiz 10th April 2022 NBCC JE 2017 Solution

Harikesh Yadav April 10, 2022
Updated 2022/05/08 at 8:49 PM

Electrical Engineering Daily Quiz 10th April 2022 NBCC JE 2017 Solution

Answer-C
Solution: Click Here
Question : 4 

Three phase transformers connection preferable for step up operation is

A. Y-Y
B. Δ-Δ
C. Y-Δ
D. Δ-Y
Answer-D
Solution: Click Here
Question : 5 

For short circuit test and open circuit test of transformers the instruments are connects on

A. LV side and HV side respectively
B. HV side and LV side respectively
C. HV side only
D. LV side only
Answer-D
Solution: Click Here
Question : 6 

In Merz Price differential protection of a Delta Star transformer, the CTs are connected in primary and secondary winding in a

A. Delta Star connection
B. Star Star connection
C. Star Delta connection
D. Any of these
Answer-C
Solution: Click Here
Question : 7

A DC shunt motor is

A. Variable speed motor
B. Adjustable speed motor
C. Constant speed motor
D. Constant speed adjustable speed motor
Answer-C
Solution: Click Here
Question : 8 

Speed of DC shunt motor is

A. Proportional to the square of armature current
B. Inversely proportional to armature current
C. Independent of armature current
D. Directly proportional to armature current
Answer-C
Solution: Click Here
Question : 9

In synchronous motor

A. The generated emf must always be less than terminal voltage
B. The generated emf must always more than terminal voltage
C. The generated voltage can be less than or greater than terminal voltage
D. None of these
Answer-C
Solution: Click Here
Question : 10 

While starting synchronous motor its field winding should be

A. Kept open
B. Connected to a DC source
C. Connected to a AC source
D. Kept short circuited
Answer-D
Solution: Click Here
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