Explanation

• A Unijunction Transistor (UJT) has one junction.
• It is commonly used in triggering circuits for thyristors and other semiconductor devices.

Explanation

The Superposition Theorem is applicable to linear response only.

It states that in a linear circuit with multiple sources.

The response (voltage or current) can be calculated by summing the responses due to each source independently.

Explanation

The condition of a fully charged lead-acid battery can be checked by:

Voltage: 2.1-2.2 volts per cell.

Gassing: Battery emits gas when fully charged.

Specific Gravity: 1.260-1.300 in the electrolyte.

Explanation

Sir Dinsha was the father of Ratna, who was later became known as the wife of Muhammad Ali Jinnah.

He was a prominent Parsi community leader and philanthropist.

Explanation

The Khilafat movement (1919–22) was a political campaign launched by Indian Muslims.

The 'Khilafat Movement Day' was observed on 17th October 1919. 

Explanation

The AND gate represents a series gate.

It only outputs a high signal when all its inputs are high.

Similar to a series connection where current flows only if all conditions are met.

Explanation

SCR (Silicon Controlled Rectifier) is a four-layer device.

It consists of four layers of semiconductor material arranged as alternately P-type and N-type layers.

Explanation

UJT (Uni-Junction Transistor) has negative resistance.

This characteristic allows it to be used in oscillators and timing circuits.

Explanation

A marriage is dissolved if either the husband or wife becomes deceased.

This event legally terminates the marital union.

Explanation

An inductor stores energy in its magnetic field.

When current flows through the inductor, it generates a magnetic field around it, which stores energy.