Book 3 Chapter 3: SI Units Flashcards
Which of the following base units is the only one with a prefix?
A) Mole
B) Kilogram
C) Candela
D) Ampere
B) Kilogram
Which is the better presentation:
A) 26 kg
B) 26kg
A) 26 kg
How many millilitres are in a litre?
1000
How many litres are in a cubic metre?
1000
In Montana, your car required 21 USCS gallons to fill the fuel tank. What is this amount in litres?
A) 54.25
B) 85.65
C) 79.5
D) 101.25
C) 79.5
Information on your new car indicates “7.5 L per 100 km”. Express this in miles per imperial gallon.
37.7 miles per imperial gallon
In Idaho you filled your car with 19 USCS gallons. Express this in imperial gallons.
A) 11.75
B) 21.35
C) 14.85
D) 15.82
D) 15.82
Convert 103 kPa to psi.
14.9 psi
A tank in your facility is stated as having a capacity of 250 imperial gallons. Express this in kilolitres.
1.14 kL
An electric motor is rated at 15 hp. What is this motors rating in kW?
A) 11.19
B) 11.05
C) 15.25
D) 14.35
A) 11.19
A safety valve stamping indicates a popping pressure of 250 psi. What is the popping pressure in kPa?
A) 1522
B) 1724
C) 2126
D) 1875
B) 1724
A boiler nameplate indicates a BTU rating of 1.5 million BTU. Express this in kJ.
1 582 500 kJ
Convert 250 kPa to psi.
A) 36.25
B) 38
C) 40.9
D) 21.6
E) 10.0
A) 36.25
The unit of power in the SI system is the:
A) Pascal
B) Joule
C) Newton
D) Watt
E) Ohm
D) Watt
An electric motor has a rating of 25 kW. What is this motors rating in hp?
A) 10.5
B) 50.9
C) 25
D) 40.12
E) 33.51
E) 33.51
One bar of pressure in the SI system is equal to:
A) 1000 Pa
B) 10 kPa
C) 100 Pa
D) 10 Pa
E) 100 kPa
E) 100 kPa
Convert 50ºC to Fahrenheit, if 9/5ºC + 32.
A) 122
B) 148
C) 130
D) 150
E) 155
A) 122
One hundred of a base unit is indicated by the prefix:
A) deca
B) mega
C) giga
D) hecto
E) kilo
D) hecto
10 imperial gallons is equal to _______ litres.
A) 45.46
B) 22.72
C) 88
D) 44
E) 22
A) 45.46
How many litres are in a kilolitre?
A) 10-3
B) 250
C) 100
D) 10
E) 1000
E) 1000
15 miles is equal to:
A) 5277 m
B) 2414 m
C) 7509 m
D) 1609 m
E) 29260
B) 2414 m
Which of the following SI quantities are written incorrectly?
A) 50 m. Long
B) Three metres
C) 110 Mpa
D) 45 kg
E) 54 467 382 mm
A) 50 m. Long
The SI base unit for acceleration is:
A) kPa
B) m/s
C) watts
D) m/s2
E) j/s
D) m/s2
The SI base unit for acceleration is:
A) kPa
B) m/s
C) watts
D) m/s2
E) j/s
D) m/s2
An area of 36 sq mile what is its area in km2?
A) 93.24 km2
B) 388.8 km2
C) 13.9 km2
D) 91.44 km2
E) 3.33 km2
A) 93.24 km2
How many kilograms are equal to 3 pounds?
A) 7.62 kg
B) 1.36 kg
C) 9.84 kg
D) 0.91 kg
E) 6.61 kg
B) 1.36 kg
If a county park has an area of 96 km2 what is its area in sq mile?
A) 14.88 sq mile
B) 248.7 sq mile
C) 619.2 sq mile
D) 37.06 sq mile
E) 243.8 sq mile
D) 37.06 sq mile
Which of the following base units is the only one with a prefix?
A) Kilogram
B) Ampere
C) Metre per second
D) Candela
E) Mole
A) Kilogram
How many foot pounds are equal to 83 Joules of force?
A) 210.82 ft lb
B) 112.62 ft lb
C) 20.92 ft lb
D) 329.34 ft lb
E) 61.17 ft lb
E) 61.17 ft lb
How many cubic metres are equal to 21 cubic feet?
A) 742.05 m3
B) 0.83 m3
C) 344.26 m3
D) 1.28 m3
E) 0.59 m3
E) 0.59 m3
Which form of writing the SI quantity and symbol is correct:
A) 26 kg
B) 26kg
C) 26 kilograms
D) Twenty six kg
E) 26 kgs
A) 26 kg
How many kilocalories are equal to 150 British thermal units?
A) 158.23 kcal
B) 142.2 kcal
C) 595.24 kcal
D) 37.8 kcal
E) 59.06 kcal
D) 37.8 kcal
How many kilopascals are equal to 3.5 bar air pressure?
A) 24.13 kPa
B) 350 kPa
C) 88.9 kPa
D) 0.035 kPa
E) 123.68 kPa
B) 350 kPa
