Yes, you can download the GATE ECE exam admit card without a passport-sized photograph by following these steps:

STEP 1: Visit the official GATE website
Go to the official website of the Graduate Aptitude Test in Engineering (GATE) which is gate.iitb.ac.in.

STEP 2: Login to your GATE account
Click on the "Candidate's Login" tab on the homepage and enter your login credentials including your Enrollment ID/Email Address and Password. Solve the captcha if prompted.

STEP 3: Access the Admit Card
Once you have successfully logged in, find the "Download Admit Card" link and click on it. This will redirect you to a new page.

STEP 4: Verify your details
On the new page, you will be able to see your personal information. Verify that all the details displayed are correct. If there are any discrepancies, contact the GATE authorities immediately.

STEP 5: Proceed without a photograph
If you do not have a passport-sized photograph to upload, you can proceed without it. Look for the option that allows you to proceed without uploading a photograph and click on it.

STEP 6: Download the Admit Card
After selecting the option to proceed without a photograph, click on the "Download Admit Card" button. Your GATE ECE exam admit card will be downloaded in PDF format.

STEP 7: Print and Preserve
Once the admit card is downloaded, take a printout of the document. Make sure the printout is clear and all the details are visible. Keep the admit card safely as it will be required during the examination.

Note: While you can download the admit card without a passport-sized photograph, it is recommended to carry a valid photo identification proof along with the admit card to the examination center.

Key Points:
- Visit the official GATE website (gate.iitb.ac.in)
- Login to your GATE account with your Enrollment ID/Email Address and Password
- Access the Admit Card section
- Verify your personal details
- Proceed without uploading a photograph
- Download the admit card in PDF format
- Print and preserve the admit card for the examination
- Carry a valid photo identification proof along with the admit card to the examination center.