Question: As per ICAO, the minimum basic runway length for A and E type of airport will be________________?

• 1. 1500 m and 600 m
• 2. 2100 m and 750 m
• 3. 1500 m and 750 m
• 4. 2100 m and 600 m

Question: The length of clear zone for none instrument runway of a small aircraft is________________?

• 1. 150 m
• 2. 300 m
• 3. 600 m
• 4. 750 m

Question: Aluminium bronze contains__________________?

• 1. 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe
• 2. 92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg
• 3. 10% aluminium and 90% copper
• 4. 90% magnesium and 9% aluminium with some copper

Question: The correct composition of Babbit metal is__________________?

• 1. 87.75% Sn, 4% Cu, 8% Sb, 0.25% Bi
• 2. 90% Sn, 2% Cu, 4% Sb, 2% Bi, 2% Mg
• 3. 87% Sn, 4% Cu, 8% Sb, 1% Al
• 4. 82% Sn, 4% Cu, 8% Sb, 3% Al, 3% Mg

Question: Neutral solution is one which has pH value__________________?

• 1. greater than 7
• 2. less than 7
• 3. equal to 7
• 4. pH value has nothing to do with neutral solution

Question: Basic solution is one which has pH value___________________?

• 1. greater than 7
• 2. equal to 7
• 3. less than 7
• 4. pH value has nothing to do with basic solution

Question: Recrystallisation temperature can belowered by_________________?

• 1. purification of metal
• 2. grain refinement
• 3. working at lower temperature
• 4. all of the above

Question: Austenite rs a combination of_________________?

• 1. ferrite and cementite
• 2. cementite and gamma iron
• 3. ferrite and austenite
• 4. ferrite and iron graphite

Question: Lead is poured into the joint between two pipes. These pipes may be made of____________________?

• 1. cast iron
• 2. vitrified clay
• 3. asbestos cement
• 4. concrete

Question: Pearlite is a combination of___________________?

• 1. ferrite and cementite
• 2. cementite and gamma iron
• 3. ferrite and austenite
• 4. ferrite and iron graphite