The unit of mechanical advantage is:
No unit
Newton
Meter
Joule
The formula for efficiency is:
(Output/Input) × 100
(Input/Output) × 100
(MA / VR) × 100
Work × Time
Power is defined as:
Work / Time
Force × Distance
Force / Area
Horsepower (HP) is equal to:
746 W
1000 W
735 W
1 kW
Energy is the capacity to:
Store force
Do work
Accelerate object
Resist motion
If the efficiency is 80%, it means:
Input is 80% of output
Output is 80% of input
Power is 80%
Work is 80 joules
The formula for Potential Energy is:
PE = mgh
PE = ½ mv²
PE = F / d
PE = P × t
Which energy is highest at the top of a hill?
Kinetic energy
Potential energy
Electrical energy
Thermal energy
What is the velocity of a stationary object?
Maximum
Equal to acceleration
Zero
9.8 m/s²
A freely falling body has constant:
Speed
Acceleration
Force
Energy
Mechanical Advantage (MA) is:
Output / Input
Load / Effort
Effort / Load
The force acting perpendicularly per unit area is:
Work
Pressure
Stress
Power
Work done is zero when:
Displacement = 0
Force = 0
Time = 0
Velocity = 0
The unit of specific gravity is:
kg/m³
m/s²
g/cm³
Work done = Force ×_______________
Time
Distance
Mass
When is kinetic energy zero?
At rest
While moving
At top of motion
At impact
Power × Time =
1 kilowatt =
100 W
10 W
1 W
SI unit of weight is:
Kilogram
Watt
The gravitational force acts:
Downward
Upward
Horizontal
Diagonal
The term ‘brake horsepower’ refers to:
Power lost
Output at engine shaft
Power input to system
Friction power
Which affects kinetic energy most?
Velocity
Volume
Height
A machine can have efficiency:
More than 100%
Exactly 100%
Less than 100%
Always zero
The formula of velocity is:
Distance / Time
Speed × Time
Force / Mass
Power / Time
Which one is not a fundamental quantity?
Length
