VSSC Instrument Mechanic Paper 2015

Vikram Sarabhai Space Center Instrument Mechanic Paper 2015

The gravity controlled instruments have scales which are not uniform but are crowded because
(a) Balance weight is more than the control weight
(b) Current is proportional to the deflecting angle
(c) Current is proportional to Sin angle
(d) Balance weight itself is not uniform

The prismatic compass is an instrument for measuring
(a) The foot of the perpendicular in survey work
(b) rectangular offsets
(c) angles in survey works
(d) None of these

Orifice plate are usually made of
(a) stainless steel
(b) copper
(c) plastic
(d) None of these

Bimetallic thermometers may be used for
(a) Indicating air temperature in home and offices
(b) Controlling temperatures by making or breaking electrical contacts
(c) Indicating temperatures inside a duct
(d) All of the above

Optical pyro meters ______
(a) Can measure the temperature of any clean burning gas
(b) Can measure the temperature down to 80 degree celcius
(c) Can monitor the temperature of moving object
(d) None of the above

To calibrate thermocouples, we can use _____
(a) stirred liquid baths
(b) heated metal blocks
(c) fluidized baths
(d) Any of the above

When it is desired to meausre liquid level with liquid under pressure or vacuum, the sight glass must be connected to the tank
(a) at the top
(b) at the bottom
(c) at the top as well as at the bottom
(d) None of the above

Hydrostatic pressure type level indicator is a ______
(a) Direct method of liquid level measurement
(b) Indirect method of liquid level measurement
(c) None of the above
(d) All of the above

In the radiation level detector, when the tank is full with liquids, the amount of radiation received at the detector is _____
(a) Directly proportional to the amount of liquid between the radiation source and the detector
(b) Inversely proportional to the amount of liquid between the radiation source and the detector
(c) Independent of the amount of liquid
(d) None of the above

The performance of capacitance level indicator is severely affected by dirt, because they change the
(a) Area of plate
(b) distance between two plates
(c) die-electric constants
(d) None of the above