WorksheetsScience Form 3_Chap 6.2 Transformer
Total questions: 25
Worksheet time: 20mins
What is the type of transformer?
Step-up transformer
Step-down transformer
What is the type of transformer?
Step-up transformer
Step-down transformer
Name the part of (i).
Primary Coil
Secondary Coil
Soft iron core
Name the part of (ii).
Primary Coil
Secondary Coil
Soft iron core
Name the part of (iii).
Primary Coil
Secondary Coil
Soft iron core
What is meant by "input voltage"?
The voltage that had been changed by the transformer.
The voltage supplied by the source.
What is meant by "output voltage"?
The voltage that had been changed by the transformer.
The voltage supplied by the source.
The transformer is a device used to .......... the value of a voltage.
steady
resist
change
anchor
If a transformer reduces voltage, it is called a....................... transformer.
step left
step right
step up
step down
If a transformer increases voltage, it is called a ......... transformer.
step right
step left
step up
step down
The winding of a transformer which is connected to a source of energy is called the ....... winding.
primary
secondary
tertiary
If a transformer is operated with direct current, the current must be ........ in value, or it must be broken up into pulses.
weighty
light
changed
heavy
A Transformer is an example of a ........................... inductance
mechanical
electromagnetic
transformer
The thin sheets of steel from which transformer cores are made are called...................
lamination
transformer
copper
A laminated transformer core reduces the amount of energy that is wasted in the form of........
solidifying
flux
heat
The value of the second winding voltage of an iron-core transformer depends upon the ....... of turns, this winding contains as compared to the number of ........ winding turns.
primary, size
number, primary
size, height
number, size
A transformer has 100 turns in the primary coil and 25 turns in the secondary coil. When a 120 V is applied to the primary coil, what is the voltage in the secondary coil?
480V
30V
20V
450V
Transformer works on which of the following principle
Lenz Law
Ampere's Law
Faraday's Law of Electromagenetic Induction
Fleming's Law
The function of a transformer is to ...
raise and lower the apparent power levels
transfer DC voltage from the primary winding to the secondary winding
increase or decrease A.C voltage or A.C current levels
transform mechanical energy into electrical energy
1.20 V
