863069
Descrição
Quiz por Vito Martino, atualizado more than 1 year ago
|
|
Criado por Vito Martino
mais de 10 anos atrás
|
|
Questão 1
Questão
The work needed to raise a load of 95kg to a height of 30 m is approximately
Responda
-
28 J
-
2.79 kJ
-
28 kJ
-
285 J
Questão 2
Questão
The pivot point of a lever is called
Responda
-
centre
-
pulley
-
Load
-
fulcrum
Questão 3
Questão
Calculate the MASS of the LOAD required to balance the EFFORT applied shown below.
Image:
Slide1.JPG (image/JPG)
Responda
-
824.6kg
-
1160.1kg
-
118.3kg
-
266.2kg
Questão 4
Questão
A motor has an input power of 3 kW and is 85 % efficient. What is the output power?
Responda
-
2.55 kW
-
3 kW
-
3.53 kW
-
2.4 kW
Questão 5
Questão
If an object has a mass of 50 Kg on earth, in space its mass would be
Responda
-
100 kg
-
490 kg
-
50 kg
-
41 kg
Questão 6
Questão
What is the power of a hoist required to lift an object of 20 kg, 20 m in 30 seconds.
Responda
-
3.3kW
-
1.3kW
-
13.3W
-
130.8W
Questão 7
Questão
Pliers rely on which principle for their operation
Responda
-
leverage
-
tension
-
torsion
-
friction
Questão 8
Questão
A motor has an input power of 50kW and an output power of 47kW. What is the efficiency of the motor?
Responda
-
100 %
-
86 %
-
96 %
-
94 %
Questão 9
Questão
A motor has an output power of 40kW and an efficiency of 80%. What is the input power of the motor?
Responda
-
32 kW
-
50 kW
-
40 kW
-
54 kW
Questão 10
Questão
The power input to a machine is 90 W and the output power is 60 W the efficiency of the machine is
Responda
-
86 %
-
66.6 %
-
75 %
-
80 %
Questão 11
Questão
The weight of an object is the
Responda
-
mass of the object divided by 9.81
-
the same as the mass when there is gravity
-
force acting on top of the object due to gravity
-
force acting directly below the object due to gravity
Questão 12
Questão
A mass of 9.5 Kg exerts a force on earth of
Responda
-
9.3 N
-
95 N
-
9.5 N
-
93.2 N
Questão 13
Questão
What is the power of a motor required to lift a load of mass 300kg 40m in 2 minutes.
Responda
-
981 W
-
6000 W
-
98.1 W
-
100 W
Questão 14
Questão
Calculate the distance D required to balance the effort and load shown
Image:
Slide2.JPG (image/JPG)
Responda
-
5.64m
-
6.65m
-
4.54m
-
6.45m
Questão 15
Questão
A motor has an output power of 40kW and an efficiency of 66.66%. What is the input power of the motor?
Responda
-
30 kW
-
60 kW
-
50 kW
-
70 kW
Questão 16
Questão
A 2kW heater is 90% efficient. The input power to the heater is
Responda
-
5kW
-
1.88kW
-
3kW
-
2.22kW
Questão 17
Questão
A mass of 30kg would have an weight of
Responda
-
0.327N
-
3.05kN
-
3.05N
-
294.3N
Questão 18
Questão
A motor has an efficiency of 73%. If the input power is 32kW, the output power available is
Responda
-
76.64kW
-
23.36kW
-
22.8kW
-
32kW
Questão 19
Questão
Calculate the work done when required to raise a load of 1000kg through a vertical distance of 20m.
Responda
-
19620J
-
20000J
-
200000J
-
196200J
Questão 20
Questão
A force of 50kN moves an object a distance of 2m. The work done is.
Responda
-
25kJ
-
50kJ
-
100kJ
-
200kJ
Questão 21
Responda
-
2.5kg
-
10kg
-
5kg
-
30kg
Questão 22
Responda
-
Fulcrum
-
middle point
-
Load
-
Distance
Questão 23
Questão
What is the relationship between force, mass and acceleration?
Responda
-
f = ma
-
f = m/a
-
f = m - a
-
f = m + a
Questão 24
Questão
What is the work done when a force of 30N move an object 10m
Responda
-
200 metres
-
300 Horse power
-
300 Watts
-
300 Joules
Questão 25
Questão
What is the gravitational pull on earth
Responda
-
Image:Slide1.JPG (image/JPG)
-
Image:Slide2.JPG (image/JPG)
-
Image:Slide3.JPG (image/JPG)
-
Image:Slide4.JPG (image/JPG)
Questão 26
Questão
The force of gravity on earth is considered to be
Responda
-
Image:Slide1.JPG (image/JPG)
-
Image:Slide2.JPG (image/JPG)
-
Image:Slide3.JPG (image/JPG)
-
Image:Slide4.JPG (image/JPG)
Questão 27
Questão
A load of 50Kg has a force of 25N applied what is the acceleration of the load
Responda
-
Image:Slide1.JPG (image/JPG)
-
Image:Slide2.JPG (image/JPG)
-
Image:Slide3.JPG (image/JPG)
-
Image:Slide4.JPG (image/JPG)
Quer criar seus próprios Quizzes gratuitos com a GoConqr? Saiba mais.