Chemical Engineering Mcqs

The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the___________________?

• (A)  Final control element
• (B)  On-off control
• (C)  Floating control action
• (D)  None of these

Answer

Submitted By :Ali Uppal

Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of_____________________?

• (A)  90% tungsten carbide and 10% cobalt
• (B)  70% aluminium oxide & 30% silica
• (C)  30% nickel, 15% chromium & 55% tungsten
• (D)  65% tungsten & 35% zirconium

Answer

Submitted By :Ali Uppal

Which of the following low melting alloy containing bismuth and lead is used for electric fuse ?

• (A)  Wood’s metal
• (B)  Babbitt metal
• (C)  Monel metal
• (D)  Duralumin

Answer

Submitted By :Ali Uppal

Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be_____________________?

• (A)  5
• (B)  1.25
• (C)  2.5
• (D)  3.75

Answer

Submitted By :Ali Uppal

Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of_________________?

• (A)  Lumps
• (B)  Pellets
• (C)  Briquettes
• (D)  Sinter

Answer

Submitted By :Ali Uppal

Cementite is in the lamellar form in the _____________________ phase of steel ?

• (A)  Martenistic
• (B)  Bainitic
• (C)  Pearlitic
• (D)  Ferritic

Answer

Submitted By :Ali Uppal

Wavelength of radiation emitted by a body depends on the ________________ of its surface?

• (A)  Temperature
• (B)  Area
• (C)  Nature
• (D)  All ‘A’, ‘B’ & ‘C’

Answer

Submitted By :Ali Uppal

Which of the following metals is the most prone to work hardening ?

• (A)  Brass
• (B)  Aluminium
• (C)  Copper
• (D)  Lead

Answer

Submitted By :Ali Uppal

Working of linear variable differential transducer (LVDT) is based on the principle of variable_____________________?

• (A)  Capacitance
• (B)  Resistance
• (C)  Mutual inductance
• (D)  None of these

Answer

Submitted By :Ali Uppal

The dimensional formula of bulk modulus of elasticity is same as that of the ____________________?

• (A)  Pressure
• (B)  Density
• (C)  Force
• (D)  None of these

Answer

Submitted By :Ali Uppal