📝 [PIPE] QB ID: 1517081204 | Advanced Coaching Series | Set 04 – Elements

It is the most common dryer used which consist of rotating cylinder inside which the materials flow while getting in contact with hot gas.

It is the ratio of the mass of water-vapor in air and the mass of air if it is saturated is called:

The hands feel painfully cold when the skin temperature reaches _____.

The refrigerant used in steam jet cooling is:

The total heat of the air is a function of _____.

Boiling point of Freon-12 at atmospheric pressure is:

Which of the following is NOT a type of water cooled condenser in refrigeration?

Component of absorption refrigeration system in which the solution is cooled by cooling water.

Cascade refrigeration cycle is often used in industrial process where objects must be cooled to temperature below:

Type of refrigerant control designed to maintain a pressure difference while the compressor is operating.

As a rule of thumb, for a specified amount of compressed air, the power consumption of the compressor decreases by _____ for each 3 deg C drop in the temperature inlet air to the compressor.

Modern way of detecting air compressor leak is by using _____.

For foundation of stacks, the maximum pressure on the soil is equal to the pressure due to the weight and the _____.

Foundation bolts of specified size should be used and surrounded by a pipe sleeve with an inside diameter of at least _____.

For multi-stage compression of an ideal Brayton cycle, the back ratio will _____.

Type of turbine that has a specific speed below 5.

A high discharge type of turbine.

Use to minimize the speed rise due to a sudden load rejection.

Is the speed of a turbine when the head on the turbine is one meter.

Is a fluid property which refers to the intermolecular attraction by which the separate particles of the fluid arc held together.

Which of the following is NOT the cause of black smoke in diesel engine?

Which of the following is not a method of starting a diesel engine?

Two-stroke engine performs _____ to complete one cycle.

A type of geothermal plant used when there is a presence of brine extracted from underground.

Is the most important safety device on the power boiler.

During hydrostatic test, the safety valves should be _____.

Where deaerating heaters are not employed, it is recommended that the temperature of the feed water be not less than _____.

Is a reaction during which chemical energy is released in the form of heat.

By reheating the steam in an ideal Ranking cycle, the heat rejected will:

By increasing the boiler pressure in Rankine cycle the moisture content at boiler exit will _____.

Presently the highest steam temperature allowed at the turbine inlet is about ______.

Two most common gases employed in Stirling and Ericsson cycles are:

The most common designs of Gas Turbine, the pressure ratio ranges from _____.

In Brayton cycle, the heat is transformed during what process?

The fuel injection process in diesel engine starts when the piston _____.

If the cut-off ratio of diesel cycle increases, the cycle efficiency will _____.

The fuel used in a power plant that is used during peak periods.

Typical compression ratio of Otto cycle is _____.

If Joule Thomson coefficient is equal to zero, then the process will become _____.

If the fluid passed through a nozzle, its entropy will:

Refrigerant consisting of mixtures of two or more different chemical compounds, often used individuals as refrigerant for other applications.

Pairs of mating stop valves that allow sections of a system to be joined before opening these valves or separated after closing them.

An enclosed passageway that limits travel to a single path.

For immediate dangerous to life or health (IDHL), the maximum concentration from which unprotected persons are able to escape within _____ without escape-impairing symptoms or irreversible health.

The volume as determined from internal dimensions of the container with no allowance for the volume of internal parts.

A waiting room or large hallway serving as a waiting room.

A continuous and unobstructed path of travel from any point in a building or structure to a public way.

Any device or portion of the equipment used to increase refrigerant pressure.

The quantity of refrigerant stored at some point is the refrigeration system for operational, service, or standby purposes.

Secondary refrigerant is a liquid used for the transmission of heat, without a change of state, and having no flash point or a flash point above _____ as determined from ASTM.

A service valve for dual pressure-relief devices that allows using one device while isolating the other from the system, maintaining one valve in operation at all times.

Tubing that is enclosed and therefore exposed to crushing, abrasion, puncture, or similar damage after installation.

Refers to blends comprising multiple components of different volatile that, when used in refrigeration cycles, change volumetric composition and saturation temperature as they evaporate (boil) or condense at constant pressure.

Is a premises or that of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.

Is one in which a secondary coolant is in direct contact with the air or other substance to be cooled or heated.

Refrigerant number R-744 is _____.

Refrigerant number R-1150 is _____.

Refrigerant R-40 is _____.

When the air duct system serves several enclosed spaces, the permissible quantity of refrigerant in the system shall not exceed the amount determined by using the total volume of those spaces in the which the airflow cannot be reduced to less than _____ of its maximum when the fan is operating.

The space above a suspended ceiling shall not be included in calculating the permissible quantity of refrigerant in the system unless such space is continuous and is part of the air return system.

Which of the following is NOT a possible location of service valve?

A coil in series with evaporator that is use to prevent the liquid refrigerant entering the compressor.

A type of valve connected from discharge of compressor directly to suction that is normally closed and will open automatically only if there is high discharge pressure.

Use to increase the capacity of condenser.

Is use to subcooled the refrigerant from the condenser

Which of the following is NOT a part of low pressure side in refrigeration system?

Which of the following is NOT a part of high pressure side in refrigeration system?

Which of the following is NOT a part of condensing unit?

By subcooling the refrigerant in refrigeration system, the compressor power per unit mass will _____.

Superheating the refrigerant in refrigeration system without useful cooling, the refrigeration effect per unit mass will _____.

By subcooling the refrigerant in refrigeration system, the specific volume at compressor suction will _____.

Pressure loss due to friction at the condenser, the compressor power per unit mass will _____.

Which of the following is NOT a type of air-cooled condenser?

A type of refrigerant control typically used in household refrigeration.

Type of condenser that operates like a cooling water.

The major problem of heat pump is _____.

Dominant refrigerant used in commercial refrigeration system.

Cascade refrigerant system are connected in _____.

Is use to heat up the solution partially before entering the generator in absorption refrigeration system.

The COP of actual absorption refrigeration system is usually _____.

Sight glass is often located at _____.

Use to detects a vibration in current caused by the ionization of decomposed refrigerant between two opposite charged platinum electrodes.

The ability of oil to mix with refrigerants.

Joints and all refrigerants-containing parts of a refrigerating system located in an air duct carrying conditioned air to and from an occupied space shall be constructed to withstand a temperature of _____ without leakage into the airstream.

Refrigerant piping crossing an open space that affords passageway in any building shall be not loss than _____ above the floor unless the piping is located against the ceiling of such space and is permitted by the authority having jurisdiction

Methyl chloride shall not be in contact with _____.

Shall not be in contact with any halogenated refrigerants.

Are suitable for use in ammonia system.

If a pressure-relief device is used to protect a pressure vessel having an inside dimension of 6 in or less, the ultimate strength of the pressure vessel so protected shall be sufficient to withstand a pressure at least _____ the design pressure

Seats and discs shall be limited in distortion, by pressure or other cause, to set pressure change of not more than _____ in a span of five years.

Liquid receivers, if used or parts of a system designed to receive the refrigerant change during pumpdown charge. The liquid shall not occupy more than _____ of the volume when temperature of the refrigerant is 90F

The discharge line (B4) shall be vented to the atmosphere through a ____ fitted to its upper extremity.

Convert fossil fuels into the shaft work.

Ultimate strength drops by 30% as steam temperature raises from _____ for unalloyed steel

Recent practice limits steam temperature to _____.

In a closed feed water heater, the feed water pass through _____.

Is use if extracted steam upon condensation gets subcooled.

Needs only single pump regardless of number of heaters.

Is also known as deaerator.

Dissolve gases like _____ makes water corrosive react with metal to form iron oxide

A cycle typically used in paper mills, textile mills, chemical factories, sugar factories and rice mills.

When process steam is basic need and power is byproduct, this cycle is known as _____.

A type of turbine employed where steam continuously extracted for process heating.

Which of the following is used for binary cycle power generation for high temperature application?

Critical temperature of mercury is _____.

Critical pressure of mercury is _____.

Method used in converting heat directly to electricity by magnetism.

Which of the following is NOT a material used for thermoelectric elements?

A type of coal formed after anthratice.

Which of the following is lowest grade of coal?

Which of the following helps in the ignition of coal?

Is the ratio of fixed carbon and volatile matter.

A suspension of a finely divide fluid in another.

Contains 90% gasoline and 10% ethanol.

Process used commercially in coal liquefaction.

Is an organic matter produced by plants in both land and water.

In thermal power plant, induced draft fans are located at the _____.

In thermal power plant, forced draft fans are installed at the _____.