NHPC quiz

Hydrogen’s specific energy is approx.…… the specific energy of conventional fuels

• 1 time

• 2 times

• 3 times

• 5 times

Below what approx. temperature H2 Liquefies

• -100^O C

• -250^O C

• -500^O C

• -700^O C

If 10kWh energy can be produced from 1 kg Diesel, how much kWh energy from 1kg of Hydrogen?

• 20

• 30

• 40

• 50

Is Hydrogen Toxic?

• True

• False

Cylindrical fuel cell has ………. with regard to planar fuel cell.

• Better volumetric and gravimetric power density

• Lower volumetric and gravimetric power density

• Higher volumetric and lower gravimetric power density

An electrolyser converts

• chemical energy to electrical energy

• electrical energy to chemical energy

• mechanical energy to electrical energy

• chemical energy to thermal energy

A fuel cell converts

• chemical energy to electrical energy

• electrical energy to chemical energy

• mechanical energy to electrical energy

• chemical energy to thermal energy

In case of electrolysers, the increase in gas pressure

• increases contact resistance

• decrease the contact resistance

• remains constant

The technology cost curves usually follow which kind of trend:

• Linear

• Exponential 

• Logistic (S Curve)

• Random

Currently, the major feedstock for hydrogen production is

• Natural gas

• Biomass

• water

• Crude