Turbomachines Quiz | Turbomachines Objective Type Questions and Answers

Sports GK Questions and Answers 2024 (Latest Updated)

Awards & Honours GK Questions 2024 (Latest Updated)

Questions
21 The product of force (F) and time (t) is called as________.
A momentum
B work done
C impulse
D pressure

Answer: impulse
22 What is the formula for forces exerted by fluid on a body?
A (Rate of momentum in) x (Rate of momentum out)
B (Rate of momentum in) – (Rate of momentum out)
C (Rate of momentum in) + (Rate of momentum out)
D None of the above

Answer: (Rate of momentum in) – (Rate of momentum out)
Advertisement
Article and Schedule Quiz Start Test!
DOWNLOAD CURRENT AFFAIRS PDF FROM APP
23 The radial force in rotodynamic machine, which is developed by rate of change of momentum in radial velocity, is taken care by__________.
A journal bearing
B radial thrust bearing
C both a. and b.
D none of the above

Answer: journal bearing
24 Meridonial velocity is the resultant of _____________ components of fluid velocity.
A radial and tangential
B tangential and axial
C radial and axial
D unpredictable

Answer: radial and axial
25 _______________ components of fluid velocity have the responsibility of the transportation of fluid through the machine.
A Radial and tangential
B Tangential and axial
C Radial and axial
D None of the existing

Answer: Radial and axial
26 In which turbine the pressure energy of water is first converted into kinetic energy by means of nozzle kept close to the runner?
A Impulse turbine
B Reaction turbine
C Both a. and b.
D None of the above

Answer: Impulse turbine
27 The pressure of water is atmospheric and remains constant while passing over the runner in __________ .
A Impulse turbine
B Reaction turbine
C Both a. and b.
D None of the above

Answer: Impulse turbine
28 The energy of water entering the reaction turbine is _______
A fully the kinetic energy
B fully the pressure energy
C partly the pressure energy and partly the kinetic energy
D unpredictable

Answer: partly the pressure energy and partly the kinetic energy
29 Which of the following is an example of impulse turbine?
A Propeller turbine
B Francis turbine
C Kaplan turbine
D Pelton wheel

Answer: Pelton wheel
30 The runner of __________ turbine always be under pressure of above atmospheric
A Turgo
B Girand
C Kaplan
D None of the above

Answer: Kaplan
31 The water from runner in reaction turbine is discharged into tail race through a draft tube which has ____________ cross sectional area.
A constant
B gradually decreasing
C gradually increasing
D uneven

Answer: gradually increasing
32 __________ turbines are also called as parallel flow turbine.
A Radial flow
B Axial flow
C Both radial flow and axial flow
D None of the above

Answer: Axial flow
33 In which type of reaction turbine does the water flow in radial direction at the outer periphery of runner and leave at the centre in the direction parallel to the axis of rotation of runner?
A Radial flow turbine
B Axial flow turbine
C Mixed flow turbine
D All of the above

Answer: Mixed flow turbine
34 What is the formula to calculate specific speed (Ns) of a turbine rotating at a speed of 'N' rpm that develops the power of 'P' kW at the heat of 'H' m?
A (Ns) = (√N x P) x (H)(5/4)
B (Ns) = (2 √N x P) x (H)(5/4)
C (Ns) = (N √P) x (H)(5/4)
D (Ns) = (2N √P) x (H)(5/4)

Answer: (Ns) = (N √P) x (H)(5/4)
35 Generally, the value of specific speed of Kaplan turbine is _____________ that of the Pelton turbine.
A lower than
B higher than
C same as
D unpredictable

Answer: higher than
36 The passage of uniformly varying cross-section in which the kinetic energy of steam increases at the expense of its pressure is called as__________
A steam turbine
B steam nozzle
C steam area
D all of the above

Answer: steam nozzle
37 The nozzle efficiency can be defined as the ratio of
A isentropic enthalpy drop to actual enthalpy drop
B actual enthalpy drop to isentropic enthalpy drop
C isothermal enthalpy drop to isentropic enthalpy drop
D isentropic enthalpy drop to isothermal enthalpy drop

Answer: actual enthalpy drop to isentropic enthalpy drop
38 The quality of vapour at the exit of nozzle ___________ due to nozzle friction.
A increases
B decreases
C does not change
D unpredictable

Answer: increases
39 Pump transfers the mechanical energy of a motor or of an engine into _________ of a fluid.
A pressure energy
B kinetic energy
C either pressure energy or kinetic energy
D pressure energy, kinetic energy or both

Answer: pressure energy, kinetic energy or both
40 Which of the following is NOT a type of positive displacement pumps?
A Reciprocating pump
B Rotary displacement pump
C Centrifugal pump
D None of the above

Answer: Centrifugal pump

Random GK Questions

Q. The Cancer like disorder of unchecked multiplication of blood cells is termed :
Q. Which out of the following is regarded as the chief rock types of the Pre-Cambrian Era ?
Q. Pregnant women usually become deficient in
Q. First Indian person who promptly decline Bharat Ratna Award was ____________.
Q. The biological decomposition of organic controlled conditions known as
Q. Plaster of Paris is made by partial dehydration of
Assam Direct Recruitment Test Series

Teacher Eligibility Test

Assam Direct Recruitment Test Series