WorksheetsTransformer
Total questions: 15
Worksheet time: 8mins
A Transformer is used to change _________in a circuit
Voltage
frequency
power
inductance
True or False.. In an electrical transformer, High Voltage side will have more number of turns:
True
False
Transformer works on which of the following principle:
Fleming's Law
Faraday's Law of Electromagnetic induction
Ampere's Law
Lenz Law
Which of the following represent the ratings on a transformer
KVA and A
KW and V
V and R
W and I
True or False.... Transformer Oil acts as Coolant but not as Insulating Medium
True
False
True or false...Electrical Transformer can able to Transform both AC and DC Voltages in a Circuit:
True
False
What type of transformer is this?
Step up
Step down
Lamination of the transformer core is made of _____________
Iron
Silicon Steel
Aluminum
Cast Steel
A transformer transform
Current
Voltage & current
Frequency
Voltage
Primary winding of a transformer
is always a low voltage winding
is always a high voltage winding
Could either be a low voltage or high voltage winding
none of the above
In a step down transformer the current in the secondary changes by 15 A ,this results in a change in the supply current of __________.
less than 15 A
more than 15 A
15 A
none of the above
Which side of a step up transformer will have a larger size conductor?
primary
secondary
top
bottom
In a transformer energy is transfer from the primary to the secondary through____________.
Cooling oil
through air
by the flux
none of the above
A transformer has a current ratio of 3:5 ,which side of the transformer has less current flowing ?
primary
secondary
right side
top
The turns ratio of a transformer is equal to ____________
Vs/ Vp
Ip/Is
Pp/Ps
Vp /Vs
