CHP20

There are ________ different types of high voltage testers currently in use?

• One

• Two

• Three

• Four

This is one of the oldest types of testers available and utilizes a Tesla coil to produce high voltage, what type am I?

• High frequency AC

• Low frequency AC

• Pulsed DC

• Continuous DC

Normally mains powered and uses transformers to step the mains voltage up to the required level, what type am I?

• Low frequency AC

• Continuous DC

• Pulsed DC

• High frequency AC

They work on the same principle as a capacitor discharge ignition system used in many car ignition circuits, what type am I?

• High frequency AC

• Pulsed DC

• Low frequency AC

• Continuous DC

The most common type of high voltage holiday detectors used in the protective coatings industry are the?

• DC holiday detectors

• Low frequency AC

• High frequency AC

• Sponge detector

The principle of operation is that the battery drives a high-frequency oscillator which converts the battery voltage from 12 volts D.C to a high A.C voltage, what type am I?

• Continuous DC

• Low frequency AC

• High frequency AC

• Pulsed DC

Holiday detection can be conducted on steel and _________?

• Cloth

• Rubber

• Plastic

• Concrete

The DC holiday detector works by detecting the current flow in a _________?

• Coating

• Circuit

• Lining

• Earth

The __________ strength is the maximum working voltage that a coating can withstand without breaking down?

• Coating

• Circuit

• Dielectric

• Electrical

Concrete is a conductive material due to its ______ content or ______ contained in it?

• Lime

• Mineral

• Water

• Cement