RRB JE 2015 Question Paper (29-Aug-2015) Shift 1

Question 1

Which one of the following thermodynamics process approximates the steaming of food in a pressure cooker?

Accepted Answer

Isochoric

Answer

Isenthalpic

Answer

Isobaric

Answer

Isothermal

Question 2

Ice kept in a well-insulated thermoflask is an example of which system?

Accepted Answer

Isolated system

Answer

Closed system

Answer

Open system

Answer

Non-flow adiabatic system

Question 3

The two reference fuels used for cetane rating are

Accepted Answer

Cetane and $\alpha$-methyl naphthalene

Answer

Cetane and iso-octane

Answer

Cetane and tetraethyl lead

Answer

Cetane and n-heptane

Question 4

In some carburettors, meter rod and economiser device are used for

Accepted Answer

Power enrichment

Answer

Cold starting

Answer

Idling

Answer

Acceleration

Question 5

Where does mixing of fuel and air take place in case of diesel engine?

Accepted Answer

Engine cylinder

Answer

Injection pump

Answer

Injector

Answer

Inlet manifold