134. The method of heating used in an electric room heat convector is
A. resistance heating
B. induction heating
C. dielectric heating
D. arc-heating

---

135. Highest power factor can be expected in
A. Electric arc heating
B. Dielectric heating
C. Induction heating
D. Resistance heating

---

136. Heating elements which can give highest temperature in resistance heating is
A. Copper
B. nickel copper
C. Nichrome
D. silicon carbide

---

137. Nichrome wires can be safely used for heating to temperature around 1500 ?C. Materials selected for heating element should be
A. Eureka
B. Kanthal
C. Platinum molybdenum, carbon compound
D. Nichrome

---

138. Which of the following element will have the least range of temperature?
A. Eureka
B. Nichrome
C. Silicon carbon
D. Kanthal

---

139. Furnances used for cremation use is of
A. resistance heating
B. induction heating
C. dielectric heating
D. arc heating

---

140. Induction hardening is possible
A. on ferrous materials only
B. on magnetic materials only
C. on d.c. supply only
D. on a.a.supply only

---