Exam 2: Understand the Fundamental Principles and Requirements of Environmental Technology Systems

The SI unit of resistance is the:

A step down transformer has 1000 turns on the primary winding and 500 turns on the secondary winding. If the input voltage was 230 V the output voltage will be:

Good insulator materials are:

The SI unit of length is the:

An a.c. series circuit has an inductive reactance of 4 ? and a resistance of 3 ?. The impedance of this circuit will be:

Resistors of 6 ? and 3 ? are connected in parallel. The combined resistance value will be:

The inductive reactance of a 100 mH coil when connected to a 50 Hz supply will be:

The opposition to current flow in an a.c. capacitive or inductive current is called:

The opposition to current flow in an a.c. resistive circuit is called:

The newton is a measure of:

A good conductor material:

Which of the following may be defined as 'may cause a stationary object to move or bring a moving body to rest':

Which of the following may be defined as 'a measure of the amount of material in a substance':

The SI unit of electric current is the:

Resistors of 60 ?, 40 ? and 20 ? are connected in series. The total resistance value will be:

The capacitive reactance of a 100 ?F capacitor when connected to a 50 Hz supply will be:

One application for a shaded pole a.c. motor is:

The total opposition to current fl ow in any a.c. circuit is called:

Good conductor materials are: