Ch3_PHYS 6001 - SI Units (Chp 3)

Question 1

Convert 250 kPa to psi.

A) 21.6
B) 36.25
C) 40.9
D) 10.0
E) 38

Answer 1

B) 36.25

Question 2

The unit of power in the SI system is the:

A) Watt
B) Joule
C) Pascal
D) Newton
E) Ohm

Answer 2

A) Watt

Question 3

An electric motor has a rating of 25 kW. What is this motors rating in hp?

A) 10.5
B) 50.9
C) 40.12
D) 33.51
E) 25

Answer 3

D) 33.51

Question 4

One bar of pressure in the SI system is equal to:

A) 1000 Pa

B) 100 kPa

C) 100 Pa

D) 10 Pa

E) 10 kPa

Answer 4

B) 100 kPa

Question 5

Convert 50° Celsius to Fahrenheit, if °F = 9/5 °C + 32.

A) 130
B) 150
C) 122
D) 155
E) 148

Answer 5

C) 122

Question 6

One hundred of a base unit is indicated by the prefix:

A) giga
B) deca
C) kilo
D) hecto
E) mega

Answer 6

D) hecto

Question 7

10 Imperial gallons is equal to _____ litres:

A) 22
B) 45.46
C) 88
D)22.72
E) 44

Answer 7

B) 45.46

Question 8

How many litres are in a kilolitre?

A) 100
B) 1000
C) 10
D) 250
E) 10-3

Answer 8

B) 1000

Question 9

15 miles is equal to:

A) 1609 m
B) 5277 m
C) 7509 m
D) 24140m
E) 29260 m

Answer 9

D) 24140m

Question 10

Which of the following S.I quantities are written incorrectly?

A) 50 m. long
B) 110 MPa
C) Three meters
D) 54 467 382 mm
E) 45 kg

Answer 10

A) 50 m. long

Question 11

The SI base unit for acceleration is:

A) watts
B) kPa
C) m/s
D) m/s2
E) j/s

Answer 11

D) m/s2