On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the ______________ of the input signal?
(A) Frequency
(B) Amplitude
(C) Damping
(D) None of these
In connection with corrosion of metals, passivation is the process that__________________?
(A) Intensifies deterioration
(B) Changes the composition of the metal
(C) Inhibits further deterioration
(D) None of these
Tempering of a material does not improve its____________________?
(A) Machinability
(B) Toughness
(C) Internal stress level
(D) Softness
Heat flow across a hollow sphere of inner radius ‘r1’ and outer radius ‘r2’ is directly proportional to__________________?
(A) (r2 – r1)/r1. r2
(B) r1. r2/(r2 – r1)
(C) (r2 + r1)/r1. r2
(D) r1. r2/(r2 + r1)
Plasma is_____________________?
(A) A high temperature neutral gas
(B) Nothing but ionised gas
(C) A source of steady and highest controllable pressure
(D) Formed at very low temperature
Materials having resistivity ranging from 1 to 100 ohm. cm is termed as___________________?
(A) Conductor
(B) Insulator
(C) Semi-conductor
(D) None of these
Steel containing low percentage of nickel, chromium & tungsten are termed as the _____________ steel ?
(A) Wrought
(B) Tool
(C) Alloy
(D) Plain carbon
The most important requirement for aluminium industry is the availability of cheap _______________?
(A) Ore
(B) Electrical power
(C) Labour
(D) Abundant water
Which of the following is a boiler accessory i.e., not a boiler mounting ?
(A) Blow off cock
(B) Feed check valve
(C) Feed water pump
(D) Stop valve
What is the value of included angle of a triangular notch for maximum discharge ?
(A) 30°
(B) 60°
(C) 90°
(D) 120°