ISRO SAC Technician 'B' Electrician Solved Papers

When the pointer of a Megger reads close to 0 (zero), the resistance being measured is:

Four 2 $\mu\text{F}$ capacitors are connected in series. The equivalent capacitance is:

A megger is usually:

Variable resistors are:

The resistance can be measured most accurately by:

Two voltmeters have the same range 0-400 V. The internal impedance are 30,000 Ohms and 20,000 Ohms. If they are connected in series and 600 V be applied across them, the readings are:

A Zener diode is used for:

An ideal diode should have:

The starting torque of a simple squirrel-cage motor is:

Power transformers are generally designed to have maximum efficiency around:

The full load copper loss of a transformer is 1600W. At half-load the copper loss will be:

The transformer laminations are insulated from each other by:

Which of the following is not standard voltage for power supply in India?

A transformer has 1000 primary turns, connected to 250V ac supply. To get 400V secondary voltage the no of secondary turns should be:

Which of the following does not change in a transformer?

Power is defined as:

Which of the following capacitor types is polarized?

The device used to indicate the presence of an electric current is:

A voltmeter should have:

A very brief, high voltage spike on an ac power line is called as:

In N-type semiconductor, the minority carriers are:

If four resistors are connected in series, each with a value of 4 k$\Omega$, the total resistance is:

The speed of an induction motor:

Star-delta starter of an induction motor:

The starting torque of a 1-phase induction motor is: