GK Practice Test: Question Set - 03
1. The electromagnetic coils on the neck of the picture tube or tubes which pull the electron beam from side to side and up and down are called a ________?
- (A) Transformer
- (B) Yoke
- (C) Capacitor
- (D) Diode
2. In a color television set using a picture tube a high voltage is used to accelerate electron beams to light the screen. That voltage is about?
- (A) 500 volts
- (B) 5 thousand
volts
- (C) 25 thousand
volts
- (D) 100 thousand
volts
3. The transformer that develops the high voltage in a home television is commonly called a _________?
- (A) Tesla coil
- (B) Fly-back
- (C) Yoke
- (D) Van de Graaf
4. Which consists of two plates separated by a dielectric and can store a charge?
- (A) Inductor
- (B) Capacitor
- (C) Transistor
- (D) Relay
5. "FET" is a type of transistor; Its full name is ________ Effect Transistor.
- (A) Field
- (B) Factor
- (C) Flash
- (D) Force
6. What are three types of lasers?
- (A) Gas, metal
vapor, rock
- (B) Pointer,
diode, CD
- (C) Diode,
inverted, pointer
- (D) Gas, solid
state, diode
7. What will a UPS be used for in a building?
- (A) To provide
power to essential equipment
- (B) To monitor
building electricity use
- (C) To
carry messages between departments
- (D) To
control lighting and power systems
8. Once the active medium is excited, the first photons of light are produced by which physical process?
- (A) Blackbody
radiation
- (B) Spontaneous
emission
- (C) Synchrotron
radiation
- (D) Planck’s
oscillation
9. The average power (in watts) used by a 20 to 25 inch home color television is?
- (A) 70-100
- (B) 25-50
- (C) 500-800
- (D) Over 1000
10. What does AC and DC stand for in the electrical field?
- (A) Alternating
Current and Direct Current
- (B) A Rock Band
from Australia
- (C) Average
Current and Discharged Capacitor
- (D) Atlantic
City and District of Columbia
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