A. aluminum
B. Germanium
C. silicon
D. scandium
Related Mcqs:
- Solar thermal power generation can be achieved by_______________?
A. using focusing collector or heliostates
B. using flat plate collectors
C. using a solar pond
D. any of the above system - The voltage of a single solar cells is about
A. 0.5 volt
B. 1 volt
C. 1.8 volt
D. 1. 5 volt - The proper indication of incomplete combustion is_______________?
A. high CO content in flue gases at exit
B. high CO2 content in flue gases at exit
C. high temperature of flue gases
D. the smoking exhaust from chimney - In a regenerative feed heating cycle, the greatest economy is affected___________?
A. when steam is extracted from only one suitable point of steam turbine
B. when steam is extracted from several places in different stages of steam turbine
C. when steam is extracted only from the last stage of steam turbine
D. when steam is extracted only from the first stage of steam turbine - The artificial draught normally is designed to produce____________?
A. less smoke
B. more draught
C. less chimney gas temperature
D. all of the above - 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 - Pipes carrying steam are generally made up of_____________?
A. steel
B. cast iron
C. copper
D. aluminium - In coal preparation plant, magnetic separators are used to remove___________?
A. dust
B. clinkers
C. iron particles
D. sand - Which of the following load is responsible for lower power factor of supply system__________?
A. induction motors
B. resistive loads
C. synchronous Motors
D. all of the above - Diesel power plant are generally used as___________?
A. peak load plant
B. base load plant
C. standby plant
D. none of the above
