A 75‐mm‐diameter orifice with D and D/2 taps is used to measure
the flow rate of...
A 75‐mm‐diameter orifice with D and D/2 taps is used to measure
the flow rate of 65°C water in a 150‐mm‐ID pipe. Determine the
pressure difference for a flow rate of 20 L/s
An orifice meter is used to measure flow rate of liquid in pipe
shows a pressure difference of ' x ' m of water column when the
flow rate is Q If flow rate is doubled then what is delta P?
A 30 m long pipe with an outside diameter of 75 mm is
used to deliver steam at a rate of 2000 kg / hour. The vapor
pressure is 198.53 kPa entering the pipe with a quality of 98%. The
pipe needs to be given insulation with thermal conductivity of 0.2
W / (m K) so that the vapor quality only slightly decreases to 95%.
The outer surface temperature of the insulation is assumed to be 25
° C. Ignore...
A horizontal Venturimeter with inlet diameter 300 mm and throat
diameter 150 mm is used to measure the flow of water. The pressure
at inlet is 24 N/cm2 and the vacuum pressure
(p2)at the throat is 320 mm of mercury. Find the
discharge and velocity through the pipe .The value of Cd
may be taken as 0.98.
A thermocouple junction of 1.0-mm in diameter is inserted in a
large chamber to measure the temperature of hot gas flowing through
the chamber. The hot gas has a velocity of 2 m/s and temperature
(Tg) at 800 K. The chamber surface (Ts) is maintained at 500 K.
(a) If the thermocouple is at room temperature, Ti when it is
inserted in the chamber, calculate the time required for the
temperature difference, (Tg–T) to reach 2% of the initial
temperature...
A spherical thermocouple junction 1.0 mm in diameter is inserted
in a combustion chamber to measure the temperature ?T? of the
products of combustion. The hot gases have a velocity of V= 5 m/s.
(a) If the thermocouple is at room temperature, Ti,when it is
inserted in the chamber, estimate the time required for the
temperature difference, ?T?-T, to reach 2% of the initial
temperature difference, ?T?-Ti. Neglect radiation and conduction
through the leads. Properties of the thermocouple junction are...
Air flows in a pipe with a diameter, D=50 mm. The inlet
conditions are: M1 = 3; total pressure,
P01 = 1000 kPa absolute; and temperature, T1 = 550 K. The friction
coefficient is, f = 0.004. The exit Mach number decreases with the
length of the pipe.
Plot the following while the exit Mach number to be
changed from 2.5 to 0.99 with decrements of
?M=0.01:
a) L, length of the pipe that is going to give the desired...
To transmit 75 kW at 25 rev/s using 48 mm diameter shafting. The
flanges are to be made of cast iron and keyed to the shafts, and
power is transmitted from one flange to the other by a circle of
fitted bolts (four are shown in the above figure but more or less
bolts can be used). The adopted bolts must comply to the following
technical specification: Property Class Designation: 4.6
Nominal size range: M5 – M100 (Sizes M5 to...
A 90o v-notch weir is used to measure discharge flow rate. A
head (H) of 6 inches is measured behind the weir. Assume the
following:
Weir equation is Q = 2.5H2.5 (Q in cfs and H in feet)
1 cfs = 450 gpm
a) Estimate discharge flow rate in gallons per minute (gpm)
b) Briefly describe hydraulic principle of open channel flow
measurement
Please show all work. Thank you so much in advance!
Two 2.4-mm-diameter beads, C and D, are 11 mm apart, measured
between their centers. Bead C has mass 1.0 g and charge 2.5 nC
.Bead D has mass 2.0 g and charge -1.0 nC.
a) If the beads are released from rest, what is the speed
vC of C at the instant the beads collide?
b)What is the speed vD of D at the instant the beads
collide?
Two 2.1-mm-diameter beads, C and D, are 10 mm apart, measured
between their centers. Bead C has mass 1.0 g and charge 1.6 nC.
Bead D has mass 2.3 g and charge -1.0 nC.
1) If the beads are released from rest, what is the speed
vC of C at the instant the beads collide?
2) What is the speed vD of D at the instant the beads
collide?