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Electric heating
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ Heat is transferred simultaneously by condition, convection and radiation inside boiler furnaces [other wrong options] [Discuss in forum] |
| Q2 ⇒ In a resistance furnace the atmosphere is ____ oxidising [other wrong options] [Discuss in forum] |
| Q3 ⇒ For heating element high resistivity material is chosen to reduce the length of heating element [other wrong options] [Discuss in forum] |
| Q4 ⇒ In arc furnace the function of choke is to stabilize the arc [other wrong options] [Discuss in forum] |
| Q5 ⇒ Which of the following is an advantage of eddy current heating ? All of the above [other wrong options] [Discuss in forum] |
| Q6 ⇒ Which of the following heating methods has maximum power factor ? Resistance heating [other wrong options] [Discuss in forum] |
| Q7 ⇒ The process of heat transfer during the re-entry of satellites and missiles, at very high speeds, into earths atmosphere is known as ablation [other wrong options] [Discuss in forum] |
| Q8 ⇒ By which of the following methods the temperature inside a resistance furnace can be varied ? By any of the above method [other wrong options] [Discuss in forum] |
| Q9 ⇒ In resistance heating highest working temperature is obtained from heating elements made of ____ silicon carbide [other wrong options] [Discuss in forum] |
| Q10 ⇒ Ajax Wyatt furnace is started when it is filled above core level [other wrong options] [Discuss in forum] |
| Q11 ⇒ The electrode of a direct arc furnace is made of graphite [other wrong options] [Discuss in forum] |
| Q12 ⇒ ____ method has leading power factor Dielectric heating [other wrong options] [Discuss in forum] |
| Q13 ⇒ Which of the following has the highest value of thermal conductivity ? Solid ice [other wrong options] [Discuss in forum] |
| Q14 ⇒ In induction heating ____ is abnormally high. frequency [other wrong options] [Discuss in forum] |
| Q15 ⇒ For intermittent work which of the following furnaces is suitable ? Indirect arc furnace [other wrong options] [Discuss in forum] |
| Q16 ⇒ In electric press, mica is used because it is ____ conductor of heat but/and ____ conductor of electricity. good, bad [other wrong options] [Discuss in forum] |
| Q17 ⇒ Direct arc furnaces have which of the following power factors ? Low, lagging [other wrong options] [Discuss in forum] |
| Q18 ⇒ ____ is used for heating non-conducting materials. Dielectric heating [other wrong options] [Discuss in forum] |
| Q19 ⇒ Induction heating process is based on which of the following principles ? Electro-magnetic induction principle [other wrong options] [Discuss in forum] |
| Q20 ⇒ By the use of which of the following, high frequency power supply for induction furnaces can be obtained ? Motor-generator set [other wrong options] [Discuss in forum] |
| Or |