Match the use of the magnetic field to its respective description.

A two-stroke CI. engine delivers 5000 kWwhile using 1000 kW to overcome friction losses. It consumes 2300 kg of fuel per hour at

Lady_Fox [76]

Answer:

(a) Indicating power(IP)=6000 KW

(b) $\eta_{mech}$ =0.833

(c) Consumption of air per hour =46000 kg/hr

(d) $\eta_{BPth}$ =0.1865

Explanation:

Break power(BP) =5000 KW

Friction power(FP)=1000 KW

Consumption of fuel per hour=2300 kg/hr

CV=42000 KJ/kg

We know that

Indicating power(IP)=Break power(BP)+Friction power(FP)

⇒IP=5000+1000 KW

IP=6000 KW

(a)

Indicating power(IP)=6000 KW

(b)

Mechanical efficiency $\eta_{mech}=\dfrac{BP}{IP}$

$\eta_{mech}=\dfrac{5000}{6000}$

$\eta_{mech}$ =0.833

(c)

Air fuel ratio= $\dfrac{mass \ of \ air}{mass \ of \ fuel}$

consumption of air per hour=20 $\times$ 2300 kg/hr

So consumption of air per hour =46000 kg/hr

(d)

Break thermal efficiency $\eta_{BPth}=\dfrac{IP}{\dot{m_f}\times CV}$

$\dot{m_f}=\dfrac{2300}{3600}$

=0.638 kg/s

$\eta_{BPth}=\dfrac{5000}{{0.638}\times 42000}$

$\eta_{BPth}$ =0.1865

5 0

3 years ago

An insulated tank having a total volume of 0.6 m3 is divided into two compartments. Initially one compartment contains 0.4 m3 of

IRISSAK [1]

Answer:

a. The final temperature is 69.8°C

b. The final pressure is 2.67bar

c. The amount of entropy produced is 0.38568kJ/K

Explanation:

Pls, check the attached files for detail step by step explanation as typing the solution here can not be explicit.

5 0

3 years ago

The acceleration of a point is given. a = 20 t m/s2 When t=0, s = 50 m and v = -8 m/s. What are the position and velocity of the

lidiya [134]

Answer:

v=82 m/s

s=116m

Explanation:

a=20t

$\frac{\mathrm{d} v}{\mathrm{d} t}=20t\\\int\limits dv =\int(20t) dt\\v={10}t^2+c$

using condition given at t=0

$-8=10\times 0^2 +c$

c=-8

now equation becomes

v=10t²-8

v at t= 3s v=82 m/s

again

$\frac{\mathrm{d} s}{\mathrm{d} t}=10t^2-8$

$ds=(10t^2-8)dt\\\int\limits ds =\int(10t^2-8) dt\\s=\frac{10}{3} t^2-8t+b$

now using condition given s=50 at t=0

b=50

now equation becomes

$s=\frac{10}{3}t^3-8t+50$

calculating s at t=3s

s=116m

6 0

2 years ago

Their game off badminton is always on Tuesday

igomit [66]

Ok? is this a question or what?

5 0

2 years ago

Today I meant to look for my missing watch, but I could never find the time.

xxMikexx [17]

Answer:

haha i get it

Explanation:

5 0

2 years ago

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Match the use of the magnetic field to its respective description.​

Match the use of the magnetic field to its respective description.