ESAS 8-2

A steel bar is 12 m long at -3.7°C. What is the increase in its length when the bar is heated to 5°C. The linear expansion for steel, α is 12 x 10⁻⁶/°C.

• 1.25 cm

• 1.25 mm

• 2.5 cm

• 2.5 mm

Which of the following is the process that cannot be found in a Carnot engine cycle?

• Isobaric expansion

• Adiabatic compression

• Adiabatic expansion

• Isothermal expansion

What is the branch circuit rating for hermetic motor 80 A?

• 80

• 92

• 100

• 120

The largest solid conductor for raceway is:

• 8 mm²

• 5.5 mm²

• 14 mm²

• 3.5 mm²

To consider as continuous load:

• 3 hours or more

• 4 hours or more

• 5 hours or more

• 6 hours or more

How many branch circuits in 55 kVA load, with 220 V and 20 A branch circuit?

• 12

• 13

• 14

• 15

Find the specific volume of water with density of 1,000 kg/m³.

• 0.004 m³/kg

• 0.002 m³/kg

• 0.001 m³/kg

• 0.003 m³/kg

NGCP warns ______ alert if tropical disturbance within 24 hours.

• yellow

• blue

• red

• weather disturbance

In computing, what is a tape drive?

• a data storage device

• an OCR device

• a pointing device

• a multimedia device

If the velocity of the flow in a 2-cm radius hose is 1.2 m/s, what is the output velocity in a 0.5 cm radius jet issuing from a nozzle attached at the end of the pipe?

• 0.192 m/s

• 4.8 m/s

• 0.3 m/s

• 0.075 m/s