Master official ISRO Space Applications Centre (SAC) Technician 'B' (Electrician) recruitment examination questions across Basic Electrical Principles & Circuit Laws, Magnetism & Inductance, AC Fundamentals & Polyphase Circuits, Transformers & Cleanroom Substation Operations, DC Machines & Special Motors (Stepper, Servo, BLDC), Online UPS, Battery Banks & Inverters, Solar Photovoltaic Systems, Cable Harnessing & High-Bay Electrical Wiring, Low-Resistance Clean Instrumentation Earthing, Measuring Instruments, and Aerospace Electrical Safety Standards.
Marking pattern: +1.00 / +3.00 positive, -0.33 / -1.00 (1/3rd) negative marking (Official ISRO Written Test / CBT Scheme).
Resistance of 50 k$\Omega$ has a conductance of:
Mica is:
Choose from the following as per correct order of conductivity in decreasing order:
An alternator doesn't contain one of the following:
Which of the following is not the same as watt:
With increase in temperature, the resistance of copper:
Electromotive force is provided by:
Which of the following bulbs will have the least resistance?
The filament of electric heater is made of:
In the colour code for resistor, number 8 is represented by:
Resistance of an electric iron of rating 1000 watts as compared to 750 watts will be:
Power taken by a resistance of 20 $\Omega$ with a flow of 10 A current is:
What is Voltage drop?
Four heaters of rating 1 kW, 250 V each are available. How will you connect them for maximum heat?
In a 3 core copper conductor cable, green colour wire is for:
Power factor of an A.C. circuit is given by:
The specific gravity of electrolyte is measured by:
A step-up transformer increases:
The frequency of DC supply is:
During charging, the electrolyte of a lead acid cell becomes:
Which wave has the least form factor?
Oil is used in a power transformer for:
Silica gel breather is used in:
DOL starter is used up to:
Overload relay is used to limit the: