611. In case of impulse steam turbine_____________?
A. there is enthalpy drop in fixed and moving blades
B. there is enthalpy drop only in moving blades
C. there is enthalpy drop in nozzles
D. none of the above

612. The pressure on the two sides of the impulse wheel of a steam turbine_____?
A. is same
B. is different
C. increases from one side to the other side
D. decreases from one side to the other side

613. In De Laval steam turbine___________?
A. the pressure in the turbine rotor is approximately same as in con¬denser
B. the pressure in the turbine rotor is higher than pressure in the con¬denser
C. the pressure in the turbine rotor gradually decreases from inlet to exit from condenser
D. none from the above

614. Incase of reaction steam turbine___________?
A. there is enthalpy drop both in fixed and moving blades
B. there is enthalpy drop only in fixed blades
C. there is enthalpy drop only in moving blades
D. none of the above

615. Curtis turbine is_____________?
A. reaction steam turbine
B. pressure velocity compounded steam turbine
C. pressure compounded impulse steam turbine
D. velocity compounded impulse steam turbine

616. Rateau steam turbine is______________?
A. reaction steam turbine
B. velocity compounded impulse steam turbine
C. pressure compounded impulse steam turbine
D. pressure velocity compounded steam turbine

617. Parson’s turbine is___________?
A. pressure compounded steam turbine
B. simple single wheel, impulse steam turbine
C. simple single wheel reaction steam turbine
D. multi wheel reaction steam turbine

618. For Parson’s reaction steam turbine, degree of reaction is____________?
A. 75%
B. 100%
C. 50%
D. 60%

619. Reheat factor in steam turbines depends on______________?
A. exit pressure only
B. stage efficiency only
C. initial pressures and temperature only
D. all of the above

620. The value of reheat factor normally varies from___________?
A. 0.5 to 0.6
B. 0.9 to 0.95
C. 1.02 to 1.06
D. 1.2 to 1.6

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