Capstone #5

Standards

100

What is AS/NZS3000:2007

Electrical installations

200

What is AS/NZS3017:2007

Verification guidelines (Testing)

300

What is AS/NZS3008

Electrical installations - Selection of cables

400

What is AS/NZS5761:2011

In service inspection and testing - Second hand electrical equipment prior to sale 

500

What is AS/NZS5762:2011

In-service safety inspection & testing - Repaired electrical equiptment 

Mystery

100

What PPE would be required when drilling cement based products?

Dust mask

Earmuffs

Safety glasses

200

What are plan specifications used for?

To give the reader extra information such as installation methods

300

What device uses two coils to magnetically transfer energy from one coil via mutual induction?

Transformer

400

Which government agency is responsible for health and safety in the workplace?

Worksafe NZ

500

What best describes a break contact, and how do they operate?

Normally closed contacts that open when operated

Double points

100

Where is the neutral located in an Edison screw fitting?

Outer sheath

200

MIMS element resistance

0.01MΩ

10,000Ω

300

Series equation rules

V_t = V_{1 +} V₂

I is constant

R_t = R₁ + R₂

400

Parallel equation rules

V is constant

I_{t =} I₁ + I₂

R_t = (R1^-1 +R2^-1)^-1

500

RCD tripping times

Type 1 - 10mA    40ms

Type 2 - 30mA   300ms

????

100

Ohms law

   V

I    R

200

A 1.5kw heater is used for 10 hours per day for 5 days. If the unit cost per Kwh is $0.35, the total cost of using this heater would be?

$26.25

1.5kwh X 10 hours X 5 days = 112.5

112.5 X 0.35 cost per unit = $26.25

300

Pythagoras formulas

C² = A² + B²

A² = C² - B²

400

Power formulas

P = I X V

I = P/V

V = P/I

P = I²R

500

What is the formula for volt drop in a series circuit?

Vt = V_d1 + V_d2 + V_d3

Pick and mix

100

What type of procedure would best minimise the danger of someone unintentionally energising a circuit?

Isolation and lockout

200

An electric shock can occur when contact is made simultaneously by making contact with 

Two objects at different voltages

300

What is extra low voltage?

50v AC

120v Ripple free DC

400

What is Low voltage?

Any voltage exceeding 50v AC or 120v ripple free DC, but not exceeding 1200v AC or 1500v ripple free DC

500

What is high voltage?

Voltage exceeding 1000v AC

or

1500v ripple free DC