Mechanical Engineering MCQs

2075 MCQs  (Page 150 of 208)

Attempt Mechanical Engineering Mcqs Quiz
On Millier chart, the constant pressure lines_________________?
A. Diverge from left to right
B. Diverge from right to left
C. Are equally spaced throughout
D. First rise up and then fall
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The bituminous coal is non-caking if its carbon content is_______________?
A. 78-81%
B. 81-85%
C. 85-90%
D. 90-95%
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In a throttling process________________?
A. Steam temperature remaisn constant
B. Steam pressure remains constant
C. Steam enthalpy remains constant
D. Steam entropy remains constant
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Water at pressure of 4 kg/cm2 and 160°C temperature when exposed to atmosphere will_________________?
A. Boil
B. Flash i.e. get converted into steam
C. Remain as it was
D. Cool down
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The pressure at which latent heat of vaporisation of water is zero, is_________________?
A. below atmospheric pressure
B. 1 kg/cm2
C. 100 kg/cm2
D. 170 kg/cm2
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The latent heat of steam with increase of pressure__________________?
A. Remains same
B. Increases
C. Decreases
D. Behaves unpredictably
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While steam expands in turbines, theoretically the entropy________________?
A. Remains constant
B. Increases
C. Decreases
D. Behaves unpredictably
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At which pressure the properties of water and steam become identical_________________?
A. 0.1 kg/cm2
B. 1 kg/cm2
C. 100 kg/cm2
D. 225.6 kg/cm2
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Pick up the wrong statement about critical condition of steam___________________?
A. Latent heat is zero
B. Liquid directly becomes steam
C. Specific volume of steam and liquid is same
D. This is the maximum pressure limit
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Adiabatic process is________________?
A. Essentially an isentropic process
B. Non-heat transfer process
C. Reversible process
D. Constant temperature process
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Word of the Day
28 Sep
Expatriate
a person who lives outside their native country.
ملک بدری، جلا وطن کرن، شہر بدر کرنا

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