**Description :** Who demonstrated the theory of electromagnetic induction in 1831? A. Michael Faraday B. Andre Ampere C. James Clerk Maxwell D. Charles Coulomb

**Last Answer :** A. Michael Faraday

**Description :** A sine wave voltage is applied across a capacitor. When the frequency of the voltage is decreased, the current (A) Increases (B) Remains constant (C) Decreases (D) Ceases

**Last Answer :** (C) Decreases

**Description :** The branch current method is based on Kirchhoff's voltage law and Kirchhoff's current law. a) true b) false

**Last Answer :** a) true

**Description :** Which of the following is considered a time domain technique in control systems? (a) Nyquist criterion (b) Bode plot (c) Root locus plot (d) Routh-Hurwitz criterion

**Last Answer :** (c) Root locus plot

**Description :** A 4-pole 50 Hz induction motor runs at 1455 rpm. What is the slip speed? : 1. 55 rpm 2. 50 rpm 3. 45 rpm 4. None of these

**Last Answer :** [Correct Answer] : 45 rpm

**Description :** water in a pipeline is doubled, then the pressure drop will be how many time the original value. : 1. same as 2. 2 times 3. 4 times 4. one-half of

**Last Answer :** [Correct Answer] : 4 times

**Description :** Density of mild steel is _____ kg/cubic meter : 1. 10,200 2. 7,860 3. 9,010 4. None of these

**Last Answer :** [Correct Answer] : 7,860

**Description :** Heat transfer occurs due to _____ difference : 1. Thermal conductivity 2. Temperature 3. Specific heat 4. Heat flux

**Last Answer :** [Correct Answer] : Temperature

**Description :** Which material has maximum thermal conductivity? : 1. Mild steel 2. Aluminium 3. Stainless steel 4. Copper

**Last Answer :** [Correct Answer] : Copper

**Description :** Two forces 40 N and 30 N act at right angles to each other on a particle. The resultant force is : 1. 1200 N 2. 50 N 3. 50 kg 4. 70 N

**Last Answer :** [Correct Answer] : 50 N

**Description :** In centrifugal casting method, which type of core is used : 1. Sand 2. No core is used 3. ferrous 4. Non-ferrous

**Last Answer :** [Correct Answer] : No core is used

**Description :** If the tight and slack side tensions in a flat belt running at 1 km/minute are 1500 N and 1000 N, the power transmitted is : 1. 15.3 kW 2. 10 kW 3. 8.3 kW 4. None of these

**Last Answer :** [Correct Answer] : 8.3 kW

**Description :** The shear stress in throat area of weld joint of length 'L' and weld legh 'h', subjected to parallel load 'P' is : 1. P/hL 2. 0.707 P/hL 3. 1.414 P/hL 4. None of these

**Last Answer :** [Correct Answer] : 1.414 P/hL

**Description :** The average cutting speed in machining mild steel by single point tool of HSS is : 1. 10 m/minute 2. 20 m/minute 3. 30 m/minute 4. 40 m/minute

**Last Answer :** [Correct Answer] : 30 m/minute

**Description :** Ductility of material is indicated by : 1. Ultimate strength 2. Endurance strength 3. Yield strength 4. elongation

**Last Answer :** [Correct Answer] : elongation

**Description :** Power transmitted by a shaft running at 700 rpm with torque of 6kNm is : 1. 880 kW 2. 440 kW 3. 220 kW 4. None of these

**Last Answer :** [Correct Answer] : 440 kW

**Description :** H7 f7 represents a _____ fit. : 1. Interference 2. clearance 3. transition 4. Very tight

**Last Answer :** [Correct Answer] : clearance

**Description :** Unit of thermal conductivity is : 1. J/kgK 2. W/square meter Kelvin 3. W/mK 4. None of these

**Last Answer :** [Correct Answer] : W/mK

**Description :** Pressure at a depth of 15 m under water surface in a dam is approximately : 1. 15 bar (a) 2. 1.5 Mpa 3. 150 kPa (g) 4. None of these

**Last Answer :** [Correct Answer] : 150 kPa (g)

**Description :** Petrol engine works on : 1. Carnot cycle 2. Rankine cycle 3. Otto cycle 4. Joule cycle

**Last Answer :** [Correct Answer] : Otto cycle

**Description :** Cavitation in a pump is associated with which pressure : 1. atmospheric 2. critical 3. vapour 4. None of these

**Last Answer :** [Correct Answer] : vapour

**Description :** Tensile stress in thin spherical shell subjected to internal pressure is : 1. pd/4t 2. pd/2t 3. pd/8t 4. pd/3t

**Last Answer :** [Correct Answer] : pd/4t

**Description :** Bernoulli's theorem applies to which type of flow : 1. incompressible 2. steady 3. non-viscous 4. all of these combined

**Last Answer :** [Correct Answer] : all of these combined

**Description :** A reversible heat engine operates between 300K and 600K. If heat output is 200 KJ, the heat input is : 1. 100 kJ 2. 300 kJ 3. 600 kJ 4. 400 kJ

**Last Answer :** [Correct Answer] : 400 kJ

**Description :** A _____ die, both cutting and non-cutting operations are done in a press station in one stroke of ram. : 1. Compound 2. Combination 3. Simple 4. Progressive

**Last Answer :** [Correct Answer] : Combination

**Description :** Annealing does not : 1. Soften the metal 2. relieve stress 3. refine the grain structure 4. increase the yield point

**Last Answer :** [Correct Answer] : increase the yield point

**Description :** Break even analysis considers _____ cost (s). : 1. fixed 2. variable 3. fixed & variable 4. no

**Last Answer :** [Correct Answer] : fixed & variable

**Description :** Which of the following is essential for boiler operation? : 1. Superheater 2. Economiser 3. Injector 4. Safety valve

**Last Answer :** [Correct Answer] : Safety valve

**Description :** Operating characteristic (OC) curve shows probability of acceptance Vs fraction _____ : 1. acceptable 2. rejection 3. defective 4. None of these

**Last Answer :** [Correct Answer] : defective

**Description :** A weight of 200N is to be pulled over a surface with coefficient of friction 0.2. What is the force needed to start motion? : 1. 1000 N 2. 40 N 3. 200.2 N 4. 199.2 N

**Last Answer :** [Correct Answer] : 40 N

**Description :** Efficiency of induction motors can be about : 1. 50 to 90 % 2. 95 to 98 % 3. 99% 4. 80 to 90 %

**Last Answer :** [Correct Answer] : 80 to 90 %

**Description :** When an orifice for flow measurement in a pipe is replaced by a venturimeter, the pressure drop for the same flow is expected to : 1. remain same 2. increase 3. decrease 4. None of these

**Last Answer :** [Correct Answer] : decrease

**Description :** As per Avogadro's law, volume of 1 k mol of any gas is _____ cubic meter at N.T.P. : 1. 22.413 2. 8.314 3. 273.15 4. None of these

**Last Answer :** [Correct Answer] : 22.413

**Description :** Large Reynolds number is an indication of : 1. Streamline flow 2. Steady flow 3. Laminar flow 4. Highly turbulent flow

**Last Answer :** [Correct Answer] : Highly turbulent flow

**Description :** Choose the odd-one out. : 1. Solar 2. Wind 3. Ocean-thermal 4. Coal

**Last Answer :** [Correct Answer] : Coal

**Description :** Human heart is a _____ pump : 1. reciprocating 2. positive displacement 3. centrifugal 4. None of these

**Last Answer :** [Correct Answer] : positive displacement

**Description :** A nozzle is said to be chocked when : 1. It discharges to atmosphere 2. it is plugged 3. It's flow is maximum 4. exit pressure is zero

**Last Answer :** [Correct Answer] : It's flow is maximum

**Description :** TIG welding is preferred for : 1. Aluminum 2. Silver 3. Mild steel 4. All of these

**Last Answer :** [Correct Answer] : Aluminum

**Description :** Resistance of a material to fatigue is indicated by : 1. Elastic limit 2. Limit of proportionality 3. Endurance limit 4. None of these

**Last Answer :** [Correct Answer] : Endurance limit

**Description :** Which engine requires forward motion through air to produce thrust : 1. I.C. 2. Rocket 3. Steam 4. Ramjet

**Last Answer :** [Correct Answer] : Ramjet

**Description :** A rectangular bar with a circular hole is to be made of a material with actual maximum permissible stress of 150 Mpa. If stress concentration factor for the configuration is 3.0, what is the nominal average stress for sizing the section? : 1. 450 Mpa 2. 50 Mpa 3. 147 Mpa 4. None of these

**Last Answer :** [Correct Answer] : 50 Mpa

**Description :** In Electro-chemical Machining, material removal is due to : 1. Corrosion 2. Erosion 3. fusion 4. Ion displacement

**Last Answer :** [Correct Answer] : Ion displacement

**Description :** Thermal efficiency of a 2-stroke engine is _____ with respect to a 4-stroke engine. : 1. more 2. less 3. same 4. None of these

**Last Answer :** [Correct Answer] : less

**Description :** A 20 tooth pinion meshes with a 63 tooth gear. The gear ratio is : 1. 83.5 2. 43.5 3. 0.6 4. 3.15

**Last Answer :** [Correct Answer] : 3.15

**Description :** Thermal efficiency of Carnot cycle depends on _____ temperature only. : 1. Source 2. sink 3. Source & sink 4. None of these

**Last Answer :** [Correct Answer] : Source & sink

**Description :** The output of a turbine is 3000 kW and efficiency is 25%. The input power is : 1. 600 kW 2. 1200 kW 3. 900 kW 4. 1500 kW

**Last Answer :** [Correct Answer] : 1200 kW

**Description :** A taper provided on pattern for it's easy withdrawl from mould is called _____ allowance. : 1. Shrinkage 2. Machining 3. Draft 4. Distortion

**Last Answer :** [Correct Answer] : Draft

**Description :** For a cantilever beam of length 2m, under load 1 kN/m, maximum bending moment is : 1. 1 kN/m 2. 1 kN/m 3. 2 kN/m 4. None of these

**Last Answer :** [Correct Answer] : 2 kN/m

**Description :** Which type of maintenance requries monitoring plant equipment health. : 1. Preventive 2. Scheduled 3. Predictive 4. Break-down

**Last Answer :** [Correct Answer] : Predictive

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