WorksheetsTransformer Science F3
Total questions: 20
Worksheet time: 13mins
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 wire around a core which is connected to a source of energy is called the ....... coil.
primary
secondary
tertiary
Calculate potential difference in the secondary coil based on the information given below.
Vp = 240 V
Np = 20
Ns = 125
Vs ?
1500
500
1000
2000
Which of the following is an example of appliance using alternating power source?
What is the material used for construction of transformer core?
Aluminium
Copper
Iron
Wood
This picture is an example of a ________________.
Motor
Generator
Step-up transformer
Step-down transformer
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
Apakah jenis transformer ini? / What is the type of transformer?
Transformer injak naik / Step-up transformer
Transformer injak turun / Step-down transformer
Apakah jenis transformer ini? / What is the type of transformer?
Transformer injak naik / Step-up transformer
Transformer injak turun / Step-down transformer
Namakan bahagian (i). / Name the part of (i).
Gegelung primer / Primary Coil
Gegelung sekunder / Secondary Coil
Teras besi lembut / Soft iron core
Namakan bahagian (iii). / Name the part of (iii).
Gegelung primer / Primary Coil
Gegelung sekunder / Secondary Coil
Teras besi lembut / Soft iron core
Apakah yang dimaksudkan dengan "voltan input"? / What is meant by "input voltage"?
Voltan yang telah diubah oleh transformer. / The voltage that had been changed by the transformer.
Voltan yang dibekalkan oleh sumber. / The voltage supplied by the source.
Berapakah nilai voltan input pada soket elektrik dirumah anda?
24
240
2400
2.4
A transformer consists of
Metal Core
Metal core and coiled wire
Metal core and polymer wire
Polymer core and metal wire
Step-up transformer is a transformer that increases...
voltage.
current.
resistance.
conductance.
A step-down transformer has an input voltage of 50 V. The output voltage will be...
less than 50 V
50 V
greater than 50 V
Assume primary has 240 turns and secondary has 60 turns. Primary is connected with 120V AC power supply. What is the voltage on the secondary?
30 V
0.333 V
2 V
120V
What is the major difference between the primary and secondary windings of a transformer?
The primary has more turns than the secondary
The secondary has more insulation than the primary
The primary is connected to the source; the secondary is connected to the load
The primary is connected to the load; the secondary is connected to the source
