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Engineering Studies Formulas Quiz

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Engineering

12th Grade

Used 2+ times

Engineering Studies Formulas Quiz
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for efficiency (η) in terms of mechanical advantage (MA) and velocity ratio (VR)?

η = MA/VR

η = VR/MA

η = MA + VR

η = MA - VR

Answer explanation

The formula for efficiency (η) is defined as the ratio of mechanical advantage (MA) to velocity ratio (VR). Thus, the correct choice is η = MA/VR, indicating how effectively a machine converts input work to output work.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for mechanical advantage (MA) in terms of load (L) and effort (E)?

MA = L/E

MA = E/L

MA = L + E

MA = L - E

Answer explanation

The formula for mechanical advantage (MA) is defined as the ratio of load (L) to effort (E). Therefore, the correct choice is MA = L/E, which indicates how much the machine amplifies the input force.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for the moment (M) in terms of force (F) and distance (d)?

M = Fd

M = F/d

M = F + d

M = F - d

Answer explanation

The moment (M) is calculated by multiplying the force (F) applied to an object by the distance (d) from the pivot point. Therefore, the correct formula is M = Fd.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for frictional force (F) in terms of the coefficient of friction (μ) and normal force (N)?

F = μN

F = μ/N

F = N/μ

F = μ + N

Answer explanation

The formula for frictional force (F) is given by F = μN, where μ is the coefficient of friction and N is the normal force. This relationship shows that frictional force is directly proportional to both the coefficient of friction and the normal force.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for allowable stress (σ_allowable) for ductile materials?

σ_allowable = σ_yield/F of S

σ_allowable = σ_UTS/F of S

σ_allowable = F of S/σ_yield

σ_allowable = F of S/σ_UTS

Answer explanation

The allowable stress (σ_allowable) for ductile materials is calculated using the yield strength (σ_yield) divided by the factor of safety (F of S). This ensures that the material remains within safe limits under load.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The pressure at depth h in the liquid can be calculated using which equation?

P = P0 + ρgh

P = ρg + h

P = P0 - ρgh

P = ρg/h

Answer explanation

The correct equation for calculating pressure at depth h in a liquid is P = P0 + ρgh, where P0 is the atmospheric pressure, ρ is the liquid density, and g is the acceleration due to gravity.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for electrical energy (E) in terms of current (I) and resistance (R)?

E = IR

E = I/R

E = R/I

Answer explanation

The correct formula for electrical energy (E) in terms of current (I) and resistance (R) is E = I^2R. This shows that energy is proportional to the square of the current multiplied by resistance, not E = IR.

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