ELEX Pre-Board Exam 8

What is a precision piece of test equipment used to compare an unknown voltage with an internal reference voltage and to indicate the difference in their values?

• Integral voltmeter
• Digital voltmeter
• Differential voltmeter
• Comparator

What is the primary advantage of power-amplifier transmitters over keyed-oscillator transmitter?

• Frequency stability
• Practicality
• Power capability
• Availability

What is the name given to a variety of rotary electromechanical, position sensing devices?

• Synchros
• Servos
• Gyros
• Rotors

What is a system in which the precise movement of large load is controlled by a relatively weak control signal?

• Sychro
• Servo
• Gyro
• Rotor

What type of capacitor with a usual range in values from 1 picofarad to 0.01 microfarad and may be used with voltages as high as 30,000 volts?

• Mylar
• Paper capacitor
• Ceramic capacitor
• Electrolytic capacitor

A material that removes oxides from surfaces to be joined by soldering or welding

• Sandpaper
• Rust converter
• Acid
• Flux

What type of radar transmitter power is measured over a period of time?

• Average power
• Peak envelope power (PEP)
• RMS power
• Apparent power

What is a mechanical device containing a spinning mass that is universally mounted?

• Sychro
• Servo
• Gyroscope
• Rotor

What type of tube best meets the requirements of a modulator switching element?

• Thyratron
• Klystron
• Magnetron
• TWT

In what manner are current-measuring instruments connected to a circuit?

• Series-parallel
• Series
• Parallel-series
• Parallel