AmateuRadioMalaysia

Monday, May 16, 2005

Do you know Series - 1

What type of voltage regulator limits the voltage drop across its junction when a specified current passes through it in the reverse-breakdown direction?

A. A Zener diode
B. A three-terminal regulator
C. A bipolar regulator
D. A pass-transistor regulator

What test instrument would be useful to measure DC resistance?

A. An oscilloscope
B. A spectrum analyzer
C. A noise bridge
D. An ohmmeter

What is the purpose of repeater operation?

A. To cut your power bill by using someone else's higher power system
B. To help mobile and low-power stations extend their usable range
C. To transmit signals for observing propagation and reception
D. To communicate with stations in services other than amateur

When fuses are installed in 12-volt DC wiring, where should they be placed?

A. At the radio
B. Midway between voltage source and radio
C. Fuses aren't required for 12-volt DC equipment
D. At the voltage source

Where would you connect an SWR meter to measure standing wave ratio?

A. Between the feed line and the antenna
B. Between the transmitter and the power supply
C. Between the transmitter and the receiver
D. Between the transmitter and the ground

If signals from your transmitter are causing front-end overload in your neighbor's television receiver, who is responsible for taking care of the interference?

A. You alone are responsible, since your transmitter is causing the problem
B. Both you and the owner of the television receiver share the responsibility
C. The FCC must decide if you or owner of the television receiver are responsible
D. The owner of the television receiver is responsible

If a dial marked in kilohertz shows a reading of 7125 kHz, what would it show if it were marked in megahertz?

A. 0.007125 MHz
B. 7.125 MHz
C. 71.25 MHz
D. 7,125,000 MHz

What is the basic unit of electromotive force (EMF)?

A. The volt
B. The watt
C. The ampere
D. The ohm

If a radio wave makes 3,725,000 cycles in one second, what does this mean?

A. The radio wave's voltage is 3725 kilovolts
B. The radio wave's wavelength is 3725 kilometers
C. The radio wave's frequency is 3725 kilohertz
D. The radio wave's speed is 3725 kilometers per second

If you have a hand-held transceiver with an output of 250 milliwatts, how many watts would this be?

A. 0.01
B. 25
C. 0.25
D. 0.125

What is the basic unit of resistance?

A. The volt
B. The watt
C. The ampere
D. The ohm

What is the basic unit of electrical power?

A. The ohm
B. The watt
C. The volt
D. The ampere

In Figure below, what is the name of element 3 of the Yagi antenna?

A. Director
B. Reflector
C. Boom
D. Driven element

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In Figure below, which symbol represents a single-pole, double- throw switch?

A. Symbol 1
B. Symbol 2
C. Symbol 3
D. Symbol 4

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In Figure below, which symbol represents a PNP transistor?

A. Symbol 1
B. Symbol 2
C. Symbol 3
D. Symbol 4

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Courtesy of E-Ham.net
Look out for the next series coming up!

1 Comments:

  • Dear Dr Tech,
    You the man !!!!
    thank you for sharing your expertise..
    once again , U the man !!

    73s

    By Anonymous 9w2xi - Wilson, at 12:13 AM  

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