Question: Pick up the correct statement ?

• 1. gas turbine uses low air-fuel ratio to economise on fuel
• 2. gas turhine uses high air-fuel ratio to reduce outgoing temperature
• 3. gas turbine uses low air-fuel ratio to develop the high thrust required
• 4. all of the above

Question: Pick up the wrong statement ?

• 1. centrifugal compressors deliver prac-tically constant pressure over a considerable range of capacities
• 2. Axial flow compressors have a sub-stantially constant delivery at variable pressures
• 3. centrifugal compressors have a wider stable operating range than axial flow compressors
• 4. axial flow compressors are bigger in diameter compared to centrifugal type

Question: A material capable of absorbing large amount of energy before fracture is known as________________?

• 1. ductility
• 2. toughness
• 3. resilience
• 4. shock proof

Question: The total strain energy stored in a body is termed as__________________?

• 1. resilience
• 2. proof resilience
• 3. modulus of resilience
• 4. toughness

Question: Resilience of a material is considered when it is subjected to_________________?

• 1. frequent heat treatment
• 2. fatigue
• 3. creep
• 4. shock loading

Question: When it is indicated that a member is elastic, it means that when force is applied, it will________________?

• 1. not deform
• 2. be safest
• 3. stretch
• 4. not stretch

Question: The internal reaction in bottom 80 cm length will be________________?

• 1. same in both cases
• 2. zero in first case
• 3. different in both cases
• 4. data are not sufficient to determine same

Question: The ratio of direct stress to volumetric strain in case of a body subjected to three mutually perpendicular stresses of equal intensity, is equal to___________________?

• 1. Young’s modulus
• 2. bulk modulus
• 3. modulus of rigidity
• 4. modulus of elasticity

Question: The elasticity of various materials is controlled by its___________________?

• 1. ultimate tensile stress
• 2. proof stress
• 3. stress at yield point
• 4. stress at elastic limit

Question: The stress developed in a material at breaking point in extension is called_________________?

• 1. breaking stress
• 2. fracture stress
• 3. yield point stress
• 4. ultimate tensile stress