Two 12 mm plates are to are welded with the help of a 8 gauge electrode. What will be the current requirement
A.75 amps
B.100 amps
C.125 amps
D.150 amps
E.130 amps
Category: Engineeeing Mcqs
Which of the following is an electric tachometer?
A.Stroboscopic tachometer
B.Eddy current tachometer
C.Drag type tachometer
D.Ignition type tachometer
E.All of the above
A body is pushed with a force of 10 N for 0.5 second. The impulse given to the body is
A.5 Ns
B.2.5 Ns
C.3.5 Ns
D.50 Ns
Work done by an expanding gas under adiabatic condition results in
A.No change in temperature
B.Temperature increase
C.Temperature decrease
D.Temperature decreases first and then increase
E.Temperature increase first and then decrease
The correct amount of excess air is the amount that gives
A.the maximum fuel consumption for the given requirement
B.the high percentages of O2 in the flue gas
C.the high stack temperature
D.the most efficient furnance operation and the minimum fuel consumption for the given heating requirement
If the discharge pressure of a refrigeration compressor is too high it shows
A.Too little or to warm condenser water
B.Lack of refrigerant
C.Excessive cooling load
D.Lack of compressor lubrication
E.Any of the above
Sprues are generally
A.uniform size
B.tapered downwards
C.tapered upwards
In case air is cooled by a process in which the humidity ratio of air does not change, the process is known as
A.Humidification
B.Dehumidification
C.Ventilation
D.Chilling
E.Sensible cooling
Modulus of elasticity for steel is approximately
A.1.2 x 106 kg/cm2
B.2 x 106 kg/cm2
C.12 x 106 kg/cm2
D.52 x 106 kg/cm2
E.78 x 106 kg/cm2
For same output and same compression ratio four stroke SI engines as compared to two stroke engines have
A.Higher fuel consumption
B.Lower thermal efficiency
C.Higher thermal efficiency
D.Higher exhaust temperatures
E.None of the above
