When the nozzle operates with the maximum mass flow, the nozzle is said to be

What is the monoisotopic and average mass of valine? Given data: Mass of the most abundant isotope of Carbon (C°)=12.0000, Mass of most abundant isotope of Hydrogen (H°)=1.0078, Mass of most abundant isotope of Oxygen (O°)=15.9949, Mass of most abundant isotope of Nitrogen (N°)=14.0031, The average mass of Carbon (C)=12.011, The average mass of Hydrogen (H)=1.008, The average mass of Oxygen (O)=15.999, The average mass of Nitrogen (N)=14.007.

A

99.068 and 99.2361

B

99.216 and 99.326

C

99.111 and 99.321

D

99.068 and 99.132

Statement (I) : Mass flow through the convergent nozzle is maximum when the exit Mach number is 1. Statement (II) : The divergent section is added to convergent nozzle to increase the exit Mach number and not to increase the mass flow rate

A

Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

B

Both Statement (I) and Statement (II) are individually true but Statement (II) is NOT the correct explanation of Statement (I)

C

Statement (I) is true but Statement (II) is false

D

Statement (I) is false but Statement (II) is true

The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle)

A

V = 44.72 hd K

B

V = 44.72 K hd

C

V = 44.72 K hd

D

V = 44.72 K hd

The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency and h_d = Enthalpy or heat drop during expansion of steam in a nozzle)

A

V = 44.72 $${{\text{h}}_{\text{d}}}\sqrt {\text{K}} $$

B

V = 44.72 $${\text{K}}\sqrt {{{\text{h}}_{\text{d}}}} $$

C

V = 44.72$$\sqrt {{\text{K}}{{\text{h}}_{\text{d}}}} $$

D

V = 44.72 $${\text{K}}{{\text{h}}_{\text{d}}}$$

The ratio of actual mass flow through the nozzle to the mass flow if the flow were isentropic is?

A

Coefficient of viscosity

B

Coefficient of velocity

C

Coefficient of discharge

D

None of the mentioned

In a town fair 50 people were asked which dessert they liked: ice cream, Donuts, or cupcakes. 28 said they like ice cream, 26 said they like donuts, and 26 said they like cupcakes. 8 said they like all three. 17 said they like donuts and cupcakes, 11 said they like ice cream and cupcakes. 5 said they do not like any of these. Find those people who liked ice cream and donuts but not cupcakes.

A

10

B

7

C

5

D

9

E

None of the above

Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All Matter is Space. Some Mass is Matter. Conclusions: A. All Mass is Space. B. Some Mass is Space. C. Some Space is Mass. D. All Space is Mass. E. All Matter is Mass.

A

B, C

B

A, C

C

A, E

D

D, B

The energy loss in flow through ven-turimeter is less than that through flow nozzle, because in case of a flow nozzle, the

A

Length is shorter

B

Throat diameter is more

C

Sudden expansion of flow in the downstream occurs

D

Distance between the throat and the inlet is more

According to the conservation law, “Net mass flow across the fluid element is equal to the rate of change of mass inside the element”. But, stating the final equation, “Net mass flow across the fluid element + the rate of change of mass inside the element = 0”. Why is the operation not subtraction?

A

Irrespective of the law, the sum is always zero

B

The two terms are always opposite in sign

C

Change in sign is not considered

D

Rate of change may be increase or decrease

When the back pressure of a nozzle is below the designed value of pressure at exit of nozzle, the nozzle is said to be

A

Choked

B

Under-damping

C

Over-damping

D

None of these

When the nozzle operates with the maximum mass flow, the nozzle is said to be

Related Questions