# Civil Engineering - Hydraulics - Discussion

### Discussion :: Hydraulics - Section 3 (Q.No.1)

1.

For exerting a pressure of 4.8 kg/cm2, the depth of oil (specific gravity 0.8), should be

 [A]. 40 cm [B]. 41 cm [C]. 56 cm [D]. 60 cm [E]. 76 cm.

Explanation:

No answer description available for this question.

 Brijendra said: (Jan 21, 2014) P=WH, H=P/W, H=48/.8=60.

 Rashid said: (Apr 30, 2016) Hi, @Brijendra. How you take 4.8 as 48?

 Binktesh Kumar said: (Sep 4, 2016) Hello, @Brijendra. How you take pressure 4.8 to 48?

 Shubham said: (Sep 8, 2016) @Brijendra. Tell me how you converted 4.8 to 48?

 Honey said: (Oct 2, 2016) Here, it is converted it in newton by multiplying 10. Another way to do it is, 1st convert 4.8kg/cm2 into kg/m2 by multiplying it with 10000. Ten again multiply by 10 to get in N/m2, then find out the specific weight. => 8 * 1000 * 10 now divide 480000/8000. You will get 60 as an answer.

 Disha said: (Oct 12, 2016) Explain briefly!

 Sasi said: (Jan 29, 2017) Pressure = W * H. 4.8 * 10^3 = sp. grvty * dnsty * H. 4800 = 0.8 * 1* H. H = 6000cm = 60m.

 Rind said: (Feb 11, 2017) H = p/w. = 48/.8, = 60.

 Abhishek Anand said: (Feb 13, 2017) Answer must be 60m. I agree.

 Bastard said: (Apr 20, 2017) PRESSURE=(UNIT WT.)*(HEIGHT). 4.8 = (0.8)*(1000/100^3)*(H), H = 6000 cm. H = 60 m.

 Bibek said: (Jul 14, 2017) Answer 60 m is correct. I agree.

 Sanjay said: (Aug 17, 2017) Yes, they all are right, the answer must be in a meter.

 Manish said: (Jan 8, 2018) @ALL. P=4.8kg/cm^2---> (1) Now we know that 1kg=10N, put in---> (1) P=48N/cm^2. W=.8. Now calculate hight by formula-P=w.h. And get answer 60 cm.

 Sadulla Ahmed said: (Dec 22, 2018) Yes, it's 60m. I agree.

 Khalid Raza said: (Dec 30, 2018) P = 4.8kg/cm^2---> (1) Now we know that 1kg=10N, put in---> (1) P=48N/cm^2. W=.8. Now calculate hight by formula-P=w.h. And get answer 60 cm.

 Ramyahegde said: (Feb 19, 2019) P = wh. w = 1 g/cc = 1000kg/cc. P = 4.8kg/cm^2 = 4.8 * 10^4 kg/m^2. 4.8 * 10^4 = 0.8 * 1000 vh. 48 = 0.8h. h = 48/0.8. h = 60m.

 Spsiro said: (Jul 21, 2019) (4.8*10000*10)/(.8*1000*10) = 60m is the correct answer.

 Sumanta said: (Oct 2, 2019) It should be 60 m not 60 cm.

 Bhim said: (Apr 4, 2020) It should be 60m not 60cm.

 Vim said: (Apr 27, 2020) P= 4.8*10^4Kg/m^2. pressure head= p/y = 4.8*10^4/ 0.8*1000. = 60m.

 Jafar said: (Sep 19, 2020) 1 kg=9.81 N so P=4.8kg/cm2 which is equal to 4.8 x 9.81 x 10000 N/m2(1m = 100cm). So now P=w.h where w=spG unit wt of water=0.8 x 9.81. hence h=60000 cm or 60m.

 Masum said: (Nov 16, 2020) Yes, it should be 60m.

 Nasir Rasool said: (May 10, 2021) 60m is the right answer.