A. A
B. l
C. A2
D. Both A. & B.
Correct Answer: D. Both A. & B. ✔
Last Updated: February 08, 2019
Related MCQs
- Which of the following has the highest value of refractive index ?
- The phenomenon occurring during explosion of a hydrogen bomb is__________?
- Energy of the sun arises mainly from __________ reactions?
- According to thermodynamic Fahrenheit scale, the fundamental interval between ice point to steam point is__________?
- Case hardening of a material is__________?
- Milk is fat dispersed in water. It is an example of__________?
- Cemented carbide tools are not suitable for cutting__________?
- Annealing of white cast iron produces __________ iron?
- Direct conversion of thermal energy to electrical energy is facilitated by the__________?
- A dense structure of grinding wheel is not used for the__________?
- If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity__________?
- Pressure required to increase the density of water by about 1% is __________ atmosphere?
- The starting of a car takes time in winter, because the__________?
- The difference between gross & net calorific values of fuel is due to the__________?
- Speisses is a mixture of the following ?
- Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress ?
- Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the __________ temperature of air?
- The elastic strain in copper is due to the__________?
- Which of the following fastening devices has a head at one end and a nut fitted to the other ?
- Chromium molybdenum steel cannot be welded using __________ welding ?
- Nitriding of a steel part does not increase its__________?
- Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by__________?
- Evaporative cooling process employs a combination of cooling and humidification in which the__________?
- Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called__________?
- The difference in one unit of Rockwell hardness number corresponds to a difference in the depth of indentation of __________ mm ?
- Electrical conductivities of semi-conductors are of the order of __________ ohm/cm ?
- Maximum hardenability of steel depends upon its__________?
- Angular displacement can be measured suitably by a__________?
- Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as__________?
- Titanium is added to molten aluminium alloys before casting for the purpose of__________?
- Theoretical volume of oxygen required for complete combustion of 1Nm3 of acetylene, in oxy-acetylene welding is __________ Nm3 ?
- A high pressure boiler generates steam at a pressure greater than __________ kg/cm2 ?
- The best lubricants for a machine working at high temperature & load is__________?
- Blast furnace slag is mainly molten__________?
- Ammonia leakage in the refrigeration system is detected by__________?
- Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ?
- Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of ?
- Cast iron contains __________ percent carbon?
- Wrought iron is not__________?
- With increase in steam pressure, its specific volume decreases __________?
- Powder metallurgy process does not make metal powder by__________?
- Vernier calipers cannot be used to measure the__________?
- What is the value of entropy at 273°K ?
- The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used ?
- Stainless steel is welded with difficulty because of__________?
- __________ of grey cast iron produces white cast iron?
- Sudden fall of atmospheric pressure by a large amount is an indication of the__________?
- Which of the following is not a charge material for cupola ?
- Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating?
- High speed steel tools retain their hardness upto a temperature of __________ °C?
- As the fluid flow rate increases, the float of the Rotameter__________?