A perfect gas at 27 C is heated at constant pressure as to trible its volume the temperature of the gas will be
1.81 deg C
2. 270 deg C
3. 627 deg C
4.900 deg C
Posted Date:-2022-03-04 10:10:58
An example of a water tube boiler is a
1.Locomotive boiler
2.Lancashire boiler
3.Babcock-Wilcox boiler
4.Cochran boiler
Posted Date:-2022-03-04 11:08:58
During tensile testing on a specimen cup and cone formation is observed with
1.cast iron
2.cast steel
3.mild steel
4.glass
Posted Date:-2022-03-04 10:22:24
For large power production, it is economical to set up
1. diesel plants
2.steam power plants
3.gas turbines
4.hydro-electric plants
Posted Date:-2022-03-04 10:24:47
In a pertrol engine the theoretical ratio of air to fuel is approximately
1.3:1
2.5:1
3.15:1
4.30:1
Posted Date:-2022-03-04 10:08:50
In our state a super thermal power station is located at
1.Hyderabad
2.Vijayawada
3.Nellore
4.Ramagundam
Posted Date:-2022-03-04 10:38:16
The equipment used for transporting material horizontally as well as vertically which saves labour cost is
1.trucks
2.car dumper
3.trailers
4.conveyors
Posted Date:-2022-03-04 10:25:54
The inlet valve in a 4 stroke IC engine opens
1.after TDC
2.before BDC
3. before TDC
4.after BDC
Posted Date:-2022-03-04 11:17:35
The kinetic energy of a body of a mass 2kg, when it falls in air from rest through a height of 5 m is
1.98.1 J
2. 9.8 Nm
3.10 n
4. 20 j
Posted Date:-2022-03-04 11:24:12
The operation chart indicates
1. method of assembly
2.sequence of operation
3.times for each operation
4.layout of machines
Posted Date:-2022-03-04 10:31:14
The thermo dynamic cycle used in a petrol engine is the
1.constant pressure cycle
2.Carnot cycle
3.Rankine cycle
4.constant volume cycle
Posted Date:-2022-03-04 11:13:45
A 4 cylinder 4 stroke diesel engine has 3000 power strokes per minute; its speed in RPM is
1.3000
2.6000
3.750
4.1500
Posted Date:-2022-03-04 11:21:22
A 4 stroke 2 cylinder deisel engine has an IMEP of 4 bar and a mechanical efficiency of 80 per cent, the brake mean effective pressure is
1.3.2 bar
2.5.0 bar
3.6.4 bar
4.2.5 bar
Posted Date:-2022-03-04 11:12:52
An aircraft gas turbine operates on
1.Sterling cycle
2. Bryton cycle
3.Rankine cycle
4.Otto cycle
Posted Date:-2022-03-04 10:32:29
An example of a water tube boiler is a
1.Locomotive boiler
2.Lancashire boiler
3.Babcock-Wilcox boiler
4.Cochran boiler
Posted Date:-2022-03-04 11:07:09
An example of a water tube boiler is a A. B. C. D.
1.Locomotive boiler
2.Lancashire boiler
3.Babcock-Wilcox boiler
4.Cochran boiler
Posted Date:-2022-03-04 11:06:02
Chunk used on turret lathe is
1.Four jaw self centering chunk
2.Collect chunk
3.Three jaw independent chunk
4.Magnetic chunk
Posted Date:-2022-03-04 10:07:21
First law of the thermodynamics deals with conversation of
1.mass
2.heat
3.momentum
4.energy
Posted Date:-2022-03-04 10:12:57
For chain drives the small sprockets should have a minimum number of teeth of
1.17
2.25
3.27
4.31
Posted Date:-2022-03-04 10:16:36
For comfort air conditioning the conditions maintained are
1.15 deg dbt to 20 deg Wbt
2.25 deg dbt to 60 % RH
3.40 deg dbt and 40 deg Wbt
4.25 deg dbt and 80 % RH
Posted Date:-2022-03-04 10:20:10
For the purpose of comparison, the steam generating capacity of a boiler is generally expressed in terms of
1.equivalent evaporation
2. kg/hr
3.steam pressure
4. thermal efficiency
Posted Date:-2022-03-04 10:35:17
For transmitting power without slip one of the following drives is used
1.belt drives
2.rope drives
3.cone pulleys
4.chain drives
Posted Date:-2022-03-04 10:18:40
he cost of lubricating oils in a machine shop may be classified as
1.direct material cost
2.prime cost
3.factory overhead cost
4.administrative overhead cost
Posted Date:-2022-03-04 11:14:41
High carbon steel has a carbon content of
1.1 to 3 %
2.0.5 to 1 %
3.0.8 to 2 %
4.2 to 4 %
Posted Date:-2022-03-04 10:27:11
In a six cylinder 4 stroke petrol engine running at 2000 RPM, the cam shaft runs at
1.1000 RPM
2. 2000 RPM
3. 6000 RPM
4. 500 RPM
Posted Date:-2022-03-04 11:18:36
In an inpulse turbine the velocity of steam remains constant in the
1.nozzles
2.moving blades
3.fixed blades
4.casing
Posted Date:-2022-03-04 11:11:54
Indicated thermal efficiency of an engine is
1. Brake power/Indicated power
2. Indicated power/Mechanical efficiency
3.Brake thermal efficiency/Mechanical efficiency
4.Brake power/Mechanical efficiency
Posted Date:-2022-03-04 11:23:09
One of the following methods is adopted for governing of steam turbines in a power plant
1.hit and miss governing
2.blow off in boile
3. throtle governing
4.speed control
Posted Date:-2022-03-04 10:33:41
One of the following type of pumps is used in a diesel engine
1. jet pump
2.reciprocating pump
3.gear pump
4.axial flow pump
Posted Date:-2022-03-04 11:19:55
Parson's turbine is an example of a
1. impulse turbine
2.reaction turbine
3.radial flow turbine
4.water turbine
Posted Date:-2022-03-04 11:11:09
Standard data used in work study is a
1.table of time required for various jobs
2. catalogue of material properties
3. table of cost of components
4.catalogue of elemental time standard
Posted Date:-2022-03-04 10:30:09
Super heated steam at 20 bar enters a nozzle, for maximum discharge the throat pressure should be A. 16 barB. C. 10 barD.
1.16 bar
2.10.92 bar
3.10 bar
4.11.6 bar
Posted Date:-2022-03-04 10:36:51
The angular speed of watt governor, when its height is 98 mm is equal to
1.10 rad/s
2.9.8 rad/s
3. 98 rad/s
4.5 rad/s
Posted Date:-2022-03-04 10:15:47
The approximate air fuel ratio in a diesel engine under rated conditions is
1.12 to 1
2.20 to 1
3.15 to 11
4.80 to 1
Posted Date:-2022-03-04 11:22:14
The area under pressure volume curve of any thermodynamic process represents
1.heat rejected only
2.heat absorbed only
3.heat absorbed and rejected
4.work done
Posted Date:-2022-03-04 10:13:48
The gudgeion pin connects the
1.connecting rod and the crank
2.piston and crank
3.crank and connecting rod
4.piston and the connecting rod
Posted Date:-2022-03-04 11:15:32
The number of valves in a two stroke engine is
1.0
2.1
3.2
4.4
Posted Date:-2022-03-04 10:11:53
Two stroke IC engines are commonly used in 2 wheelers because the
1.power to weight ratio is high
2. thermal efficiency is high
3.lube oil consumption is less
4. cnoise is less
Posted Date:-2022-03-04 10:29:00
When water at atmospheric pressure is heated from 40 deg to 80 deg, the heat absorbed is
1.sensible heat
2.latent heat
3.super heat
4.specific heat
Posted Date:-2022-03-04 10:21:11
Which one of the following is a boiler mounting?
1.fusible plug
2. super heater
3.economiser
4.chimney
Posted Date:-2022-03-04 11:05:16