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HCMC University of Technology Student’s name : ……………………
Faculty of Vocation Class : ………………………………
English section Reg. no……………………………...
TEST B
SEMESTER EXAMINATION
ENGLISH for ELECTRICAL ENGINEERING
Duration : 90 minutes
Score




Examiner’s signature
Proctor’s signature

 Date :

PART A : MULTIPLE CHOICE QUESTIONS (40 pts)
1. When an electric current runs through a transformer , some energy is lost because of …………..
A. heating energy C. the resistance of the formers
B. the resistance of the loops D. All of them
2. Between which values might a resistor marked green , blue , orange and silver vary ?
A. 45,000 ohms ± 10% C. 56,000 ohms ± 10%
B. 46,000 ohms ± 10% D. 67,000 ohms ± 10%
3. In a microwave oven the food is cooked evenly because microwaves are …………in different direction and ….. by the food
A. sent/distributed C. reflected/absorbed
B. absorbed/distributed D. distributed/absorbed
4. Electricity heats all wires it flows through because of …………in the wires
A. the voltage C. the magnetic field
B. the current D. the resistance
5. When an electric current flows through a wire, it creates ……………around the wire
A. an insultor C. a conductor
B. a magnetic field D. a semi-conductor
6. Materials that are good conductors have a …………….number of free electrons available to carry the current.
A. large C. few
B. small D. little
7. In an electric motor which component becomes an electromagnet when an electric current goes through it?
A. the field magnet C. the commutator
B. the armature D. the carbon brushes
8. Why is there a humming sound when a transformer works ?
A. Because of the flow of eddy currents C. Because of the electricity
B. Because the plats become magnetised D. All are correct
9. When temperatures rise or increase the resistance increase too: It is a/an….. A. insulator C. semi conductor
B. conductor D. super conductor
10. When a transformer is used, the current at input point is ……. than that at out put point
A. greater C. A and B
B. less D. All are correct
11. When a plastic pen is rubbed in fur it attracts flakes of paper because it has ……….in it
A. positive charges C. A and B
B. negative charges D. None are correct
12. When a light bulb is fitted in an electric circuit, a flow of electricity moves from……..to………….
A. positive polarity/negative polarity C. the left/the right
B. the right/the left D. All are correct
…2
13.Two bodies with unlike charges will………each other if they are put closely to each other 2
A. push away C. attract
B. pull towards D. B and C
14. A transformer can be used for us ……………………….
A. to have a constant voltage C. to have a suitable voltage
B. to have a required voltage D. All the correct
15. Which diode is a special purpose diode?- The one is coded ……………………………..
A. 3 letters 2 figures C. 3 letters 3 figures
B. 2 figures 3 letters D. All are correct
16. To make an electric current move through a wire, it is needed to have
A. a wire C. an electric creator
B. a voltage D. A and B
17. Static electricity is the electricity……
A. at rest C. which doesn’t move
B. in motion D. A and C
18.